Assignee
BIRMINGHAM BOLT CO
US·12 granted patents·316 citations·filing 1980–1990
Top patents by PatentIndex Score
12 records- 0189US4764055AResin reinforced expansion anchor systemBIRMINGHAM BOLT CO·Filed 1987·Granted Aug 16, 1988·72 cites·11 claims
- 0289US4347020AMine roof bolt assemblyBIRMINGHAM BOLT CO·Filed 1980·Granted Aug 31, 1982·39 cites·18 claims
- 0388US4437795AMine roof anchor assemblyBIRMINGHAM BOLT CO·Filed 1981·Granted Mar 20, 1984·34 cites·10 claims
- 0481US4556344ACombination expansion shell and resin secured mine roof anchor assemblyBIRMINGHAM BOLT CO·Filed 1984·Granted Dec 3, 1985·24 cites·9 claims
- 0569US4483645ACombination expansion shell and resin secured mine roof anchor assemblyBIRMINGHAM BOLT CO·Filed 1982·Granted Nov 20, 1984·16 cites·18 claims
- 0664US4859118AMine roof support anchor and process for installing the sameBIRMINGHAM BOLT CO·Filed 1988·Granted Aug 22, 1989·28 cites·19 claims
- 0764US4342527ASupport assembly for underground mine and tunnel roofsBIRMINGHAM BOLT CO·Filed 1980·Granted Aug 3, 1982·13 cites·6 claims
- 0863US4749310AMine roof trussBIRMINGHAM BOLT CO·Filed 1986·Granted Jun 7, 1988·27 cites·11 claims
- 0954US4534679ACombination expansion shell and resin secured mine roof anchor assemblyBIRMINGHAM BOLT CO·Filed 1984·Granted Aug 13, 1985·20 cites·6 claims
- 1048US5073064AMethod and apparatus for retorquing an installed mine roof boltBIRMINGHAM BOLT CO·Filed 1990·Granted Dec 17, 1991·26 cites·23 claims
- 1142US4534680ACombination expansion shell and resin secured mine roof anchor assemblyBIRMINGHAM BOLT CO·Filed 1984·Granted Aug 13, 1985·12 cites·7 claims
- 1238US4876877APortable tool for bending roof bolts for insertion in mine roof openingsBIRMINGHAM BOLT CO·Filed 1988·Granted Oct 31, 1989·5 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →