Patent US3517943A successfully refreshed from Google Patents.
US3517943A
Expired / Lapsed
US
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Universal weight transfer hitch
Assignee: Massey Ferguson Inc
•
Filing: 1968-07-01
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Granted: 1970-06-30
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Expires: 1988-07-01
Abstract
No abstract record available.
Inventors
- 👤 Ernest V Bunting
- 👤 Hans V Lind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:31
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; B62D49/065; A; A01; A01B; A01B59/00; A01B59/06; A01B59/066; A01B59/068; A01B63/00; A01B63/14; A01B63/145; B62D53/00; B62D53/04; B62D53/08; B62D53/0807; B62D53/0828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3062561A
Cited
US3073622A
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US3241862A
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US3275084A
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US3347560A
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US3447816A
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US3430984A
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US3463510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |