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US2812960A
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Anti-corrosion rotary air-seal assembly
Assignee: Fawick Corp
•
Filing: 1954-05-21
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Granted: 1957-11-12
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Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:36
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0824; F16L27/0828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE17569E
Cited
US2382135A
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US2413217A
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US2429929A
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US2740646A
Cited
US2495129A
Cited
US2549174A
Cited
US2653041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |