Assignee
DOWTY MINING EQUIPMENT LTD
GB·29 granted patents·226 citations·filing 1974–1988
Top patents by PatentIndex Score
29 records- 0183US4010618AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1975·Granted Mar 8, 1977·30 cites·23 claims
- 0279US4330154AMining apparatusDOWTY MINING EQUIPMENT LTD·Filed 1980·Granted May 18, 1982·22 cites·3 claims
- 0366US4573828ARoof support suitable for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1984·Granted Mar 4, 1986·15 cites·11 claims
- 0460US4027489AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1976·Granted Jun 7, 1977·11 cites·10 claims
- 0554US4568222AMine-roof supportsDOWTY MINING EQUIPMENT LTD·Filed 1984·Granted Feb 4, 1986·9 cites·1 claims
- 0654US4109472ALongwall mining apparatusDOWTY MINING EQUIPMENT LTD·Filed 1977·Granted Aug 29, 1978·8 cites·11 claims
- 0752US4636306AFluid filtering systemsDOWTY MINING EQUIPMENT LTD·Filed 1985·Granted Jan 13, 1987·17 cites·4 claims
- 0850US4552488AMine roof support systemDOWTY MINING EQUIPMENT LTD·Filed 1983·Granted Nov 12, 1985·12 cites·5 claims
- 0950US4114387AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1977·Granted Sep 19, 1978·7 cites·10 claims
- 1050US4091838APressure relief valveDOWTY MINING EQUIPMENT LTD·Filed 1976·Granted May 30, 1978·18 cites·3 claims
- 1148US4132081AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1977·Granted Jan 2, 1979·6 cites·8 claims
- 1248US4037419AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1975·Granted Jul 26, 1977·7 cites·5 claims
- 1344US4411558ARoof support suitable for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1981·Granted Oct 25, 1983·6 cites·9 claims
- 1442US4607986AShield supports suitable for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1984·Granted Aug 26, 1986·5 cites·7 claims
- 1542US3952525AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1974·Granted Apr 27, 1976·10 cites·19 claims
- 1641US4492495ARoof support for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1983·Granted Jan 8, 1985·6 cites·10 claims
- 1741US4473324AMine roof supportsDOWTY MINING EQUIPMENT LTD·Filed 1983·Granted Sep 25, 1984·5 cites·4 claims
- 1840US4430026ARoof support suitable for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1981·Granted Feb 7, 1984·5 cites·6 claims
- 1935US4491441ASelf-advancing support and control means thereforDOWTY MINING EQUIPMENT LTD·Filed 1983·Granted Jan 1, 1985·6 cites·8 claims
- 2033US4609308ARoof support suitable for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1984·Granted Sep 2, 1986·3 cites·11 claims
- 2133US4432673AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1982·Granted Feb 21, 1984·5 cites·7 claims
- 2232US4512686ARoof support suitable for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1984·Granted Apr 23, 1985·2 cites·9 claims
- 2330US4934758AAppartaus for mounting ancillary equipmentDOWTY MINING EQUIPMENT LTD·Filed 1988·Granted Jun 19, 1990·6 cites·14 claims
- 2430US4629368AShield supports suitable for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1985·Granted Dec 16, 1986·5 cites·6 claims
- 2529US4126002AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1977·Granted Nov 21, 1978·0 cites·8 claims
- 2626US4732511AMine roof supportsDOWTY MINING EQUIPMENT LTD·Filed 1983·Granted Mar 22, 1988·0 cites·4 claims
- 2726US4422808AHydraulically-operated devicesDOWTY MINING EQUIPMENT LTD·Filed 1982·Granted Dec 27, 1983·0 cites·3 claims
- 2814US4548527ARoof support suitable for use in minesDOWTY MINING EQUIPMENT LTD·Filed 1984·Granted Oct 22, 1985·0 cites·4 claims
- 2910US3987908AMining apparatusDOWTY MINING EQUIPMENT LTD·Filed 1975·Granted Oct 26, 1976·0 cites·14 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →