US2889182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sectional piston
Assignee: Individual
•
Filing: 1957-02-06
•
Granted: 1959-06-02
•
Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Marshall Elsie Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:20
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/08; F01; F01M; F01M1/00; F01M1/06; F01M1/08; F01M2001/083; F01M2001/086; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32861; Y10T403/32893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1063602A
Cited
US1951959A
Cited
US1978714A
Cited
US2069437A
Cited
US2257236A
Cited
US2436043A
Cited
US2674506A
Cited
US2782083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |