Inventor · disambiguated record
Calvin S. Johnson
Also filed as: JOHNSON CALVIN S
6 granted patents·1 pending application·78 citations·filing 1981–2006
83Inventor score
Top patents by PatentIndex Score
7 records- 0169US4722258ALog sawing apparatusJOHNSON CALVIN S·Filed 1981·Granted Feb 2, 1988·29 cites·6 claims
- 0250US5103881ALog cutting apparatusCTR MANUFACTURING INC·Filed 1991·Granted Apr 14, 1992·16 cites·2 claims
- 0347US2007215247A1Grapple sawJOHNSON CALVIN S·Filed 2006·Application pending·0 cites
- 0444US4958670ATree felling apparatusCTR MANUFACTURING INC·Filed 1990·Granted Sep 25, 1990·12 cites·14 claims
- 0540US5086684ATransportable work machine having a stabilizer leg with selectively operable auxiliary saw meansCTR MANUFACTURING INC·Filed 1990·Granted Feb 11, 1992·10 cites·8 claims
- 0633US4763705ATree felling apparatusCTR MANUFACTURING INC·Filed 1987·Granted Aug 16, 1988·7 cites·22 claims
- 0730US5724876APortable cam-link log cutting apparatusCTR MANUFACTURING INC·Filed 1995·Granted Mar 10, 1998·4 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →