Assignee
WERNER CO INC R D
US·21 granted patents·618 citations·filing 1978–1992
Top patents by PatentIndex Score
21 records- 0190USD340773SLadder topWERNER CO INC R D·Filed 1990·Granted Oct 26, 1993·39 cites·1 claims
- 0288USD310884SCover for tops of laddersWERNER CO INC R D·Filed 1987·Granted Sep 25, 1990·34 cites·1 claims
- 0388US4286353AMulti-element connection for structural membersWERNER CO INC R D·Filed 1978·Granted Sep 1, 1981·68 cites·9 claims
- 0486US4216597APicture frame retaining clipWERNER CO INC R D·Filed 1979·Granted Aug 12, 1980·65 cites·14 claims
- 0584US4656721AApparatus and methods for making rail-to-rung joints for ladders and joints for other structural elementsWERNER CO INC R D·Filed 1984·Granted Apr 14, 1987·44 cites·5 claims
- 0679US4226302ASectional ladder lockWERNER CO INC R D·Filed 1978·Granted Oct 7, 1980·36 cites·16 claims
- 0777US5067589AExtendable supportWERNER CO INC R D·Filed 1990·Granted Nov 26, 1991·37 cites·7 claims
- 0876US5259480ALadder topWERNER CO INC R D·Filed 1992·Granted Nov 9, 1993·48 cites·14 claims
- 0969US5020757ALadder jack clamping devicesWERNER CO INC R D·Filed 1987·Granted Jun 4, 1991·35 cites·4 claims
- 1067US5161909APackaging clipWERNER CO INC R D·Filed 1990·Granted Nov 10, 1992·25 cites·31 claims
- 1167US5154255ALadder shoe and method of useWERNER CO INC R D·Filed 1991·Granted Oct 13, 1992·37 cites·17 claims
- 1261US5366051AHollow plastic ladderWERNER CO INC R D·Filed 1992·Granted Nov 22, 1994·23 cites·8 claims
- 1358USD340291SLadder pail shelfWERNER CO INC R D·Filed 1991·Granted Oct 12, 1993·9 cites·1 claims
- 1457US4561165AMethod and apparatus for making hook to rail connection for scaffolds or the likeWERNER CO INC R D·Filed 1984·Granted Dec 31, 1985·14 cites·5 claims
- 1554US5050706ACeiling ladderWERNER CO INC R D·Filed 1990·Granted Sep 24, 1991·31 cites·10 claims
- 1650US5067588ALadder lashWERNER CO INC R D·Filed 1990·Granted Nov 26, 1991·18 cites·6 claims
- 1748US5297889APackaging clipWERNER CO INC R D·Filed 1992·Granted Mar 29, 1994·17 cites·26 claims
- 1846US5131495AHollow plastic ladderWERNER CO INC R D·Filed 1990·Granted Jul 21, 1992·14 cites·7 claims
- 1943US4972571AMethod of making a ladderWERNER CO INC R D·Filed 1984·Granted Nov 27, 1990·8 cites·3 claims
- 2043US4240522AExtension trestle ladderWERNER CO INC R D·Filed 1978·Granted Dec 23, 1980·9 cites·4 claims
- 2123US4422613APicture frame easelsWERNER CO INC R D·Filed 1982·Granted Dec 27, 1983·7 cites·9 claims
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