US2990226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston
Assignee: Caterpillar Inc
•
Filing: 1958-03-05
•
Granted: 1961-06-27
•
Expires: 1978-03-05
Abstract
No abstract record available.
Inventors
- 👤 Charles N Fangman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
F; F16; F16C; F16C25/00; F16C25/02; F16C17/00; F16C17/02; F16J; F16J1/00; F16J1/10; F16J1/14; F16J1/16; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2173
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1061922A
Cited
US1102188A
Cited
US1699921A
Cited
US1789089A
Cited
US1923717A
Cited
US2387634A
Cited
US2388363A
Cited
AT175415B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |