Patent US3527476A successfully refreshed from Google Patents.
US3527476A
Expired / Lapsed
US
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Combination towing vehicle and trailer and hitch assembly therefor
Assignee: Dakota Manufacturing Co Inc
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Filing: 1968-10-14
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Granted: 1970-09-08
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Expires: 1988-10-14
Abstract
No abstract record available.
Inventors
- 👤 Elmer R Winckler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:17
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0807; B62D53/0828; Y; Y10; Y10S; Y10S280/00; Y10S280/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1982052A
Cited
US2051522A
Cited
US2663574A
Cited
US2535301A
Cited
US2603531A
Cited
US2963302A
Cited
US3220750A
Cited
US3336050A
Cited
US3406852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |