US2905458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically damped spring-biased pistons and cylinders
Assignee: IMPAX Inc
•
Filing: 1957-04-15
•
Granted: 1959-09-22
•
Expires: 1977-04-15
Abstract
No abstract record available.
Inventors
- 👤 Edward M Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:53
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/063; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1531938A
Cited
US1821787A
Cited
GB570015A
Cited
US2638664A
Cited
US2648123A
Cited
US2778627A
Cited
US2788842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |