Inventor · disambiguated record
Glen S. Grissinger
Also filed as: GRISSINGER GLEN S
3 granted patents·77 citations·filing 1988–1991
74Inventor score
Technology areasE21D
Files withJENNMAR CORP3
Top patents by PatentIndex Score
3 records- 0163US5082399AMine roof anchor having adjustable resin retaining washer and expansion shell assembly with friction reducing meansJENNMAR CORP·Filed 1990·Granted Jan 21, 1992·32 cites·12 claims
- 0262US4865489AMine roof anchor having adjustable resin retaining washerJENNMAR CORP·Filed 1988·Granted Sep 12, 1989·26 cites·20 claims
- 0348US5181800AMine roof anchor having adjustable resin retaining washerJENNMAR CORP·Filed 1991·Granted Jan 26, 1993·19 cites·24 claims
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