Patent US3483930A successfully refreshed from Google Patents.
US3483930A
Expired / Lapsed
US
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Tripping mechanism for agricultural implements
Assignee: Doosan Bobcat North America Inc
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Filing: 1967-04-14
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Granted: 1969-12-16
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Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Ronald H Detwiller
- 👤 Donald O Ostenson
- 👤 Walter W Weispfenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:27
CPC Classifications
A; A01; A01B; A01B61/00; A01B61/04; A01B61/044; A01B61/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |