US2903308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite cylinder
Assignee: Individual
•
Filing: 1955-03-03
•
Granted: 1959-09-08
•
Expires: 1975-03-03
Abstract
No abstract record available.
Inventors
- 👤 George E Barnhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:39
CPC Classifications
F; F16; F16J; F16J10/00; F16F; F16F9/00; F16F9/32; F16F9/36; F16F9/368
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1379041A
Cited
US2145384A
Cited
US2209032A
Cited
US2424800A
Cited
US2403020A
Cited
US2414492A
Cited
US2448266A
Cited
US2487512A
Cited
US2502290A
Cited
US2574273A
Cited
US2520306A
Cited
US2660493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |