Patent US2247299A successfully refreshed from Google Patents.
US2247299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-cylinder two-stroke engine
Assignee: Individual
•
Filing: 1939-02-03
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Granted: 1941-06-24
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Expires: 1959-02-03
Abstract
No abstract record available.
Inventors
- 👤 Klavik Milos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:24
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/24; F02B75/243; F02B25/00; F02B25/14; F02B25/18; F02B1/00; F02B1/02; F02B1/04; F02B75/02; F02B2075/022; F02B2075/025; F02B2075/1804; F02B2075/1808
Claims Analysis
Total Claims: 0
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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) | 1944-06-23 | 1944-12-23 | 1945-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-23 | 1948-12-23 | 1949-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-23 | 1952-12-23 | 1953-06-24 | $7700.00 | Window Closed / Lapsed |