Patent US3034484A successfully refreshed from Google Patents.
US3034484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine
Assignee: Individual
•
Filing: 1961-02-02
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Granted: 1962-05-15
•
Expires: 1981-02-02
Abstract
No abstract record available.
Inventors
- 👤 Stefancin Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:32
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/08; F01C1/10; F01C1/104; F01C19/00; F01C19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US880009A
Cited
US1168099A
Cited
GB191509359A
Cited
US1276056A
Cited
US1434446A
Cited
US1378855A
Cited
US2162771A
Cited
GB583035A
Cited
FR1059495A
Cited
FR1188135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |