Patent US3508796A successfully refreshed from Google Patents.
US3508796A
Expired / Lapsed
US
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Assignee: ROGER W CHERRINGTON
•
Filing: 1968-09-06
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Granted: 1970-04-28
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Expires: 1988-09-06
Abstract
No abstract record available.
Inventors
- 👤 William W Paulson
- 👤 Roger W Cherrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:09
CPC Classifications
B; B62; B62M; B62M27/00; B62M27/02; B62D; B62D55/00; B62D55/06; B62D55/07; B62D55/08; B62D55/18; B62D55/24; B62D55/244; B62M2027/027
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) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |