Assignee
KEUFFEL & ESSER CO
45 granted patents·559 citations·filing 1969–1984
Top patents by PatentIndex Score
45 records- 0189US4012256APhoto-imaging utilizing alkali-activated photopolymerizable compositionsKEUFFEL & ESSER CO·Filed 1972·Granted Mar 15, 1977·60 cites·4 claims
- 0285US4376159AMethod of preparing matte finish color-proofing surprintsKEUFFEL & ESSER CO·Filed 1982·Granted Mar 8, 1983·72 cites·5 claims
- 0383US4318617ADC Shift error correction for electro-optical measuring systemKEUFFEL & ESSER CO·Filed 1979·Granted Mar 9, 1982·36 cites·9 claims
- 0483US4077132ADigital level indicatorKEUFFEL & ESSER CO·Filed 1977·Granted Mar 7, 1978·33 cites·8 claims
- 0580US4782626ADegradable agricultural mulch sheetingKEUFFEL & ESSER CO·Filed 1984·Granted Nov 8, 1988·42 cites·8 claims
- 0680USD264128SPatient monitor or the likeKEUFFEL & ESSER CO·Filed 1979·Granted Apr 27, 1982·26 cites·1 claims
- 0774US4244547ATheodolite leveling meansKEUFFEL & ESSER CO·Filed 1978·Granted Jan 13, 1981·21 cites·10 claims
- 0873US4376158AColor-proofing methodKEUFFEL & ESSER CO·Filed 1981·Granted Mar 8, 1983·31 cites·8 claims
- 0968US4286871APhotogrammetric measuring systemKEUFFEL & ESSER CO·Filed 1980·Granted Sep 1, 1981·20 cites·9 claims
- 1062US4097734AZero index for electro-optical measuring deviceKEUFFEL & ESSER CO·Filed 1977·Granted Jun 27, 1978·11 cites·9 claims
- 1160USD268783SCardiac telemonitor transmitter housingKEUFFEL & ESSER CO·Filed 1980·Granted Apr 26, 1983·10 cites·1 claims
- 1259US4359279APhotographic processing apparatus with liquid application to both sides of the photographic materialKEUFFEL & ESSER CO·Filed 1981·Granted Nov 16, 1982·19 cites·3 claims
- 1358USD257961SElectronic surveying instrument or the likeKEUFFEL & ESSER CO·Filed 1979·Granted Jan 20, 1981·6 cites·1 claims
- 1457US4112584ATelescope level adjusting meansKEUFFEL & ESSER CO·Filed 1977·Granted Sep 12, 1978·14 cites·7 claims
- 1555US4411166APrecise linear actuatorKEUFFEL & ESSER CO·Filed 1981·Granted Oct 25, 1983·17 cites·5 claims
- 1654USD250637SElectronic surveying instrument or the likeKEUFFEL & ESSER CO·Filed 1977·Granted Dec 26, 1978·5 cites·1 claims
- 1752US4319197AECG Amplifier overload controlKEUFFEL & ESSER CO·Filed 1980·Granted Mar 9, 1982·15 cites·9 claims
- 1852US4100329ADrafting filmKEUFFEL & ESSER CO·Filed 1976·Granted Jul 11, 1978·12 cites·6 claims
- 1952US3959888APrecise indexing detentKEUFFEL & ESSER CO·Filed 1975·Granted Jun 1, 1976·10 cites·2 claims
- 2051US4350555APrecision laminating pressKEUFFEL & ESSER CO·Filed 1980·Granted Sep 21, 1982·15 cites·9 claims
- 2150USD252918SAutomatic builder's level or the likeKEUFFEL & ESSER CO·Filed 1977·Granted Sep 18, 1979·4 cites·1 claims
- 2250US4146927AElectronic surveying systemKEUFFEL & ESSER CO·Filed 1977·Granted Mar 27, 1979·10 cites·4 claims
- 2350US4084327ATheodolite adjusting meansKEUFFEL & ESSER CO·Filed 1976·Granted Apr 18, 1978·9 cites·7 claims
- 2449US4379620ALight modulator employing electrooptic crystalsKEUFFEL & ESSER CO·Filed 1980·Granted Apr 12, 1983·14 cites·8 claims
- 2547US4130340ATwo-speed telescope focusing mechanismKEUFFEL & ESSER CO·Filed 1977·Granted Dec 19, 1978·10 cites·7 claims
- 2646USD262757SDisplay caseKEUFFEL & ESSER CO·Filed 1979·Granted Jan 26, 1982·4 cites·1 claims
- 2745US4254925ATheodolite center mounting meansKEUFFEL & ESSER CO·Filed 1979·Granted Mar 10, 1981·8 cites·9 claims
- 2845USD252917SSurveying instrument or the likeKEUFFEL & ESSER CO·Filed 1977·Granted Sep 18, 1979·3 cites·1 claims
- 2940US4116693APhoto-imaging utilizing alkali-activated photopolymerizable compositionsKEUFFEL & ESSER CO·Filed 1974·Granted Sep 26, 1978·4 cites·3 claims
- 3038USD263316SControlled lettering scriberKEUFFEL & ESSER CO·Filed 1980·Granted Mar 9, 1982·2 cites·1 claims
- 3138USD262462SControlled lettering scriberKEUFFEL & ESSER CO·Filed 1980·Granted Dec 29, 1981·2 cites·1 claims
- 3233USD263153SControlled lettering scriberKEUFFEL & ESSER CO·Filed 1980·Granted Feb 23, 1982·1 cites·1 claims
- 3333USD262378SControlled lettering scriberKEUFFEL & ESSER CO·Filed 1980·Granted Dec 22, 1981·1 cites·1 claims
- 3433US3975243AElectrolytically induced polymerization utilizing diazotization of primary aromatic aminesKEUFFEL & ESSER CO·Filed 1975·Granted Aug 17, 1976·4 cites·2 claims
- 3532USD251196SPortable numerical stereo compiler or the likeKEUFFEL & ESSER CO·Filed 1977·Granted Feb 27, 1979·1 cites·1 claims
- 3632US3954462AElectrolytically induced polymerization utilizing diazotization of primary aromatic aminesKEUFFEL & ESSER CO·Filed 1972·Granted May 4, 1976·2 cites·5 claims
- 3731US4043879AElectrolytically induced polymerization utilizing bisulfite adduct free radical precursorKEUFFEL & ESSER CO·Filed 1976·Granted Aug 23, 1977·2 cites·3 claims
- 3831US3944423ALight-sensitive diazotype material comprising a fluoroalkoxy-substituted diazonium compoundKEUFFEL & ESSER CO·Filed 1969·Granted Mar 16, 1976·2 cites·5 claims
- 3929USD262636SControlled lettering scriberKEUFFEL & ESSER CO·Filed 1980·Granted Jan 12, 1982·0 cites·1 claims
- 4029USD262544SControlled lettering scriberKEUFFEL & ESSER CO·Filed 1980·Granted Jan 5, 1982·0 cites·1 claims
- 4129USD262379SControlled lettering scriberKEUFFEL & ESSER CO·Filed 1980·Granted Dec 22, 1981·0 cites·1 claims
- 4229USD262380SControlled lettering scriberKEUFFEL & ESSER CO·Filed 1980·Granted Dec 22, 1981·0 cites·1 claims
- 4328USD251568SNumerical stereo compiler or the likeKEUFFEL & ESSER CO·Filed 1977·Granted Apr 10, 1979·0 cites·1 claims
- 4427US4012295AElectrolytically induced polymerization utilizing bisulfite adduct free radical precursorKEUFFEL & ESSER CO·Filed 1972·Granted Mar 15, 1977·0 cites·3 claims
- 4517US4419432ADiazotype composition stabilizationKEUFFEL & ESSER CO·Filed 1982·Granted Dec 6, 1983·1 cites·5 claims
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