US2801117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary seal with radially contacting sealing faces
Assignee: International Motors LLC
•
Filing: 1954-11-24
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Granted: 1957-07-30
•
Expires: 1974-11-24
Abstract
No abstract record available.
Inventors
- 👤 Francis H Bourgeois
- 👤 Pierce F Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:56
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; A; A01; A01B; A01B71/00; A01B71/08; F16J15/3464; F16J15/348; Y; Y10; Y10S; Y10S277/00; Y10S277/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2265953A
Cited
US2489781A
Cited
US2470419A
Cited
US2612390A
Cited
US2690933A
Cited
US2736624A
Cited
US2639170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |