US2141784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston
Assignee: MOTOR RES CORP
•
Filing: 1937-01-22
•
Granted: 1938-12-27
•
Expires: 1957-01-22
Abstract
No abstract record available.
Inventors
- 👤 Ray E Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:39
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/02; F02F3/04; F02F3/042; F05; F05C; F05C2201/00; F05C2201/02; F05C2201/021; F05C2201/04; F05C2201/0433; F05C2201/0448
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-12-26 | 1942-06-27 | 1942-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-26 | 1946-06-27 | 1946-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-26 | 1950-06-27 | 1950-12-27 | $7700.00 | Window Closed / Lapsed |