US2873986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined fluid and contact seal
Assignee: Individual
•
Filing: 1955-10-21
•
Granted: 1959-02-17
•
Expires: 1975-10-21
Abstract
No abstract record available.
Inventors
- 👤 Murray William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D11/04; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/106; F04D29/108; F04D29/14; F04D29/146; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/346; F16J15/40; F16J15/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1964063A
Cited
US1932214A
Cited
US2370964A
Cited
US2622902A
Cited
US2646999A
Cited
US2738208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |