US3385272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine or power driven machine with pistons orbiting in a toroidal cylinder
Assignee: Wroclawski Zaklad Przemyslu Maszynowego Lesnictwa
•
Filing: 1967-03-06
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Granted: 1968-05-28
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Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Winogrodzki Zbigniew
- 👤 Wardynszkiewicz Jerzy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:48
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/02; F01C1/063; F01C1/07; 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
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1729242A
Cited
US1644564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |