US2618253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial engine
Assignee: New Britain Machine Co
•
Filing: 1947-06-13
•
Granted: 1952-11-18
•
Expires: 1967-06-13
Abstract
No abstract record available.
Inventors
- 👤 Glenn D Angle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:55
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B75/222; F02B2075/1804; F02B2075/182; Y; Y10; Y10S; Y10S123/00; Y10S123/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US284372A
Cited
US1447245A
Cited
US692625A
Cited
US1256833A
Cited
GB193750A
Cited
US1670294A
Cited
US1921985A
Cited
US2271011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |