Individual holder
HOFFMAN DOUGLAS L
3 granted patents·52 citations·filing 1975–1980
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0177US4039153AGrinding millHOFFMAN DOUGLAS L·Filed 1976·Granted Aug 2, 1977·26 cites·10 claims
- 0276US4265057ACollet chuck aligning assembly for gem faceting machinesHOFFMAN DOUGLAS L·Filed 1980·Granted May 5, 1981·20 cites·10 claims
- 0336US3992821AGem faceting machine having an adjustable faceting head support assemblyHOFFMAN DOUGLAS L·Filed 1975·Granted Nov 23, 1976·6 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when HOFFMAN DOUGLAS L files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →