Patent US3485504A successfully refreshed from Google Patents.
US3485504A
Expired / Lapsed
US
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Composite sealing rings
Assignee: Federal Mogul Bradford Ltd
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Filing: 1965-04-05
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Granted: 1969-12-23
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Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Alan Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:04
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/064; F16J9/066; F16J9/069; F16J9/12; F16J9/14; F16J9/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA706669A
Cited
US2817564A
Cited
US2833605A
Cited
US2837385A
Cited
US2999728A
Cited
US2886384A
Cited
US3081100A
Cited
GB907729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |