Inventor · disambiguated record
Herman P. Christopherson
Also filed as: CHRISTOPHERSON HERMAN P
14 granted patents·458 citations·filing 1974–2003
94Inventor score
Top patents by PatentIndex Score
14 records- 0195US6159059AControlled thrust steering system for watercraftARCTIC CAT INC·Filed 1999·Granted Dec 12, 2000·58 cites·24 claims
- 0291US4558558ALawn mower traction control systemTORO CO·Filed 1984·Granted Dec 17, 1985·114 cites·6 claims
- 0388US3949540AMower discharge interlock apparatusTORO CO·Filed 1974·Granted Apr 13, 1976·63 cites·9 claims
- 0481US6231410B1Controlled thrust steering system for watercraftARCTIC CAT INC·Filed 1999·Granted May 15, 2001·25 cites·11 claims
- 0579US5771669AMethod and apparatus for mowing irregular turf areasTORO CO·Filed 1996·Granted Jun 30, 1998·64 cites·25 claims
- 0673US5743319AWindow blind with safety pull cordFiled 1997·Granted Apr 28, 1998·43 cites·6 claims
- 0772US4030277AMower rear shield structureTORO CO·Filed 1974·Granted Jun 21, 1977·27 cites·10 claims
- 0868US4306408AGrass catcher assemblyTORO CO·Filed 1980·Granted Dec 22, 1981·23 cites·5 claims
- 0967US6554661B2Controlled thrust steering system for watercraftARCTIC CAT INC·Filed 2002·Granted Apr 29, 2003·8 cites·3 claims
- 1062US4458472ALawn mower zone start systemTORO CO·Filed 1982·Granted Jul 10, 1984·17 cites·8 claims
- 1155US6634912B2Controlled thrust steering system for watercraftARCTIC CAT INC·Filed 2002·Granted Oct 21, 2003·5 cites·6 claims
- 1254US6568969B2Controlled thrust steering system for watercraftARCTIC CAT INC·Filed 2002·Granted May 27, 2003·3 cites·35 claims
- 1351US6793545B2Controlled thrust steering system for watercraftARCTIC CAT INC·Filed 2003·Granted Sep 21, 2004·3 cites·31 claims
- 1450US6520815B2Controlled thrust steering system for watercraftARCTIC CAT·Filed 2001·Granted Feb 18, 2003·5 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →