Patent US2920656A successfully refreshed from Google Patents.
US2920656A
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Reinforced bellows
Assignee: UNITED STATES GASKET Co
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Filing: 1956-10-19
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Granted: 1960-01-12
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Expires: 1976-10-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Elmer C Bertolet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:13
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/84; F16D3/843; F16D3/845; F16J; F16J3/00; F16J3/04; F16J3/048; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/026; F16L51/027; F16D2200/00; F16D2200/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US581343A
Cited
US1179577A
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US1905583A
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US2644487A
Cited
US2755643A
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US2728356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |