US2761748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing ring assembly
Assignee: Ramsey Corp
•
Filing: 1953-02-02
•
Granted: 1956-09-04
•
Expires: 1973-02-02
Abstract
No abstract record available.
Inventors
- 👤 Melvin W Marien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:43
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/064; F16J9/066; F16J9/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US126997A
Cited
US490913A
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US602328A
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US2068115A
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US2203208A
Cited
US2294177A
Cited
US2468980A
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US2443853A
Cited
US2468752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |