US2416846A
Expired / Lapsed
US
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Oscillating piston internal-combustion engine
Assignee: Individual
•
Filing: 1944-11-20
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Granted: 1947-03-04
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Expires: 1964-11-20
Abstract
No abstract record available.
Inventors
- 👤 Richter Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:31
CPC Classifications
F; F02; F02B; F02B53/00; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; F02B2730/00; F02B2730/03; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18184; Y10T74/18416; Y10T74/18456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR456246A
Cited
US1738963A
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US1809577A
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US2154315A
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US2156541A
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US2282999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |