Individual holder
CLASSEN ALVIN T
6 granted patents·186 citations·filing 1977–1988
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
6 records- 0192US4662456ASelf-propelled lawn aeration machineCLASSEN ALVIN T·Filed 1986·Granted May 5, 1987·70 cites·9 claims
- 0289US4279104ASign post construction having reciprocable driver for placement and removalCLASSEN ALVIN T·Filed 1979·Granted Jul 21, 1981·62 cites·5 claims
- 0360US4819734ALawn aerator with rocker arm tine synchronizing meansCLASSEN ALVIN T·Filed 1988·Granted Apr 11, 1989·17 cites·7 claims
- 0457US4606412ATine support and drive mechanism for a compact self-propelled lawn aeration machine having means for varying both forward travel speed and depth of tine penetrationCLASSEN ALVIN T·Filed 1985·Granted Aug 19, 1986·18 cites·7 claims
- 0547US4606411ASelf-propelled lawn aeration machineCLASSEN ALVIN T·Filed 1985·Granted Aug 19, 1986·12 cites·8 claims
- 0636US4128976ASpiral stair kitCLASSEN ALVIN T·Filed 1977·Granted Dec 12, 1978·7 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →