US2903970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination seal for a pump
Assignee: RTX Corp
•
Filing: 1955-03-24
•
Granted: 1959-09-15
•
Expires: 1975-03-24
Abstract
No abstract record available.
Inventors
- 👤 David M Elovitz
- 👤 George P Fulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:50
CPC Classifications
F; F04; F04D; F04D7/00; F04D7/02; F04D7/06; F04D7/065; F04D29/00; F04D29/08; F04D29/10; F04D29/106; F04D29/108; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR582365A
Cited
US1859039A
Cited
US2075895A
Cited
US2244450A
Cited
US2185048A
Cited
US2427656A
Cited
US2536638A
Cited
US2555492A
Cited
GB643247A
Cited
FR1051466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |