Patent US2762640A successfully refreshed from Google Patents.
US2762640A
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US
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Packing rings
Assignee: Raybestos Manhattan Inc
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Filing: 1952-09-10
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Granted: 1956-09-11
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Expires: 1972-09-10
Abstract
No abstract record available.
Inventors
- 👤 Guy E Horvath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:43
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1246089A
Cited
US1617952A
Cited
US1712003A
Cited
US1992967A
Cited
US2264147A
Cited
US2476324A
Cited
FR1000069A
Cited
US2686092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |