Patent US3500895A successfully refreshed from Google Patents.
US3500895A
Expired / Lapsed
US
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Retractable canopy mechanism
Assignee: ROBERT A SILVERNAIL
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Filing: 1968-03-11
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Granted: 1970-03-17
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Expires: 1988-03-11
Abstract
No abstract record available.
Inventors
- 👤 Robert A Silvernail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:01
CPC Classifications
B; B62; B62D; B62D33/00; B62D33/04; B60; B60J; B60J7/00; B60J7/02; B60J7/06; B60J7/061; B60J7/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1627716A
Cited
US1602017A
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US1873990A
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US2029676A
Cited
US2469958A
Cited
US2558926A
Cited
US2882091A
Cited
US3160436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |