Inventor
Thomas L. Stiefvater
Inventor
Ephrata, PA, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A01Dprimary
A01DHarvesting47%
A01BSoil working in agriculture or forestry13%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
A01FProcessing of harvested produce7%
B60DVehicle connections7%
PatentTitleYear
6,776,432'Drawbar adapter for pull-through swivel hitch'20046,497,087'Crop conveying drums for a disc cutterbar'20026,481,192'Steering tube for pivotally rotating a hay harvester gearbox'20026,360,516'Two stage hydraulic tongue swing mechanism'20026,273,449'Tongue latch mechanism'20016,199,355'Control apparatus for rotatable gearbox on crop harvester'20016,044,633'Control apparatus for rotatable gearbox on crop harvester'20005,916,112'Guide link for a rotatable harvester gearbox'19995,551,526'Modulated FWD clutch for tractor braking'19964,158,469'Feed material handling apparatus'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979Patents assigned to SPERRY RAND CORP (1)· patent assignee history
1979Based in New Holland, PA, US· patent location history
1996–2004Patents assigned to NEW HOLLAND NORTH AMERICA INC (9)· patent assignee history
1996–2004Based in Ephrata, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NEW HOLLAND NORTH AMERICA INC | 9 | 1996–2004 |
| SPERRY RAND CORP | 1 | 1979 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ephrata, Pennsylvania, US | 9 | 1996–2004 |
| New Holland, Pennsylvania, US | 1 | 1979 |