Patent US2900085A successfully refreshed from Google Patents.
Patent US2708759A successfully refreshed from Google Patents.
US2708759A
Expired / Lapsed
US
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Power driven draft unit
Assignee: WILBUR C KINNEY
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Filing: 1952-04-29
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Granted: 1955-05-24
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Expires: 1972-04-29
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Strawn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:54
CPC Classifications
A; A63; A63B; A63B35/00; A63B35/08; A63B35/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR696860A
Cited
US1893994A
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US2045645A
Cited
US2094136A
Cited
GB505852A
Cited
US2286350A
Cited
US2505020A
Cited
DE828650C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |