Inventor
John Papsdorf
Inventor
Lake Orion, MI, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B26Dprimary
B26DCutting18%
G05BControl or regulating systems in general18%
Y10TTechnical subjects covered by former us classification18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling6%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material6%
B27FDovetailed work6%
B60PVehicles adapted for load transportation or to transport, to carry, or to comprise special loads or objects6%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact6%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application6%
PatentTitleYear
6,749,251'Motor vehicle'20044,998,336'Truss fabrication apparatus and method of making a truss'1991D0282671'Circle drafting template'19864,379,360'Method of making a hinge with an integral pintle'19834,163,474'Internally finned tube'19793,957,188'Punched tape control system'19763,957,189'Punched tape control system'19763,955,736'Punched tape control system'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to CARDINAL OF ADRIAN (3)· patent assignee history
1976–1991Based in Lake Orion, MI, US· patent location history
1979Patents assigned to DU PONT (1)· patent assignee history
1983Patents assigned to LIBERTY HARDWARE MANUFACTURING (1)· patent assignee history
1986Patents assigned to PTL ENG (1)· patent assignee history
1986Based in Rochester, MI, US· patent location history
1991Patents assigned to PAPSDORF JOHN (1)· patent assignee history
2004Based in Oakland, MI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CARDINAL OF ADRIAN | 3 | 1976 |
| DU PONT | 1 | 1979 |
| LIBERTY HARDWARE MANUFACTURING | 1 | 1983 |
| PAPSDORF JOHNself | 1 | 1991 |
| PTL ENG | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lake Orion, MI, US | 6 | 1976–1991 |
| Oakland, MI, US | 1 | 2004 |
| Rochester, MI, US | 1 | 1986 |