US2721074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic-pneumatic shock absorber
Assignee: Individual
•
Filing: 1949-06-17
•
Granted: 1955-10-18
•
Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
- 👤 Bourcier Christian Marie Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:52
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/061; F16F9/063; F16F2230/00; F16F2230/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US254917A
Cited
FR636778A
Cited
FR359201A
Cited
FR452217A
Cited
US1918322A
Cited
US1886712A
Cited
US1918699A
Cited
US2045027A
Cited
FR751475A
Cited
GB475417A
Cited
US2207088A
Cited
US2224306A
Cited
US2369007A
Cited
US2436573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |