Patent US2897683A successfully refreshed from Google Patents.
US2897683A
Expired / Lapsed
US
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Belt tighteners
Assignee: Individual
•
Filing: 1957-09-13
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Granted: 1959-08-04
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Expires: 1977-09-13
Abstract
No abstract record available.
Inventors
- 👤 Russell H Carver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:09
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/12; F16H7/1254; F16H7/1263; F16H2007/0863; F16H2007/0874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US691538A
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US887831A
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US888031A
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DE319307C
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US1502976A
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US1582516A
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US2066721A
Cited
US2270000A
Cited
US2636221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |