US2481901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-cycle engine and method of operating same
Assignee: R F Bracke & Co
•
Filing: 1945-06-13
•
Granted: 1949-09-13
•
Expires: 1965-06-13
Abstract
No abstract record available.
Inventors
- 👤 Robert F Bracke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:01
CPC Classifications
F; F01; F01L; F01L7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1330496A
Cited
USRE19949E
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US666264A
Cited
US741138A
Cited
US733384A
Cited
US1046738A
Cited
FR460624A
Cited
FR542660A
Cited
FR607105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |