US1208030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine.
Assignee: SMITH ENGINE Co
•
Filing: 1916-05-04
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Granted: 1916-12-12
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Expires: 1936-05-04
Abstract
No abstract record available.
Inventors
- 👤 John A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:45
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/356; F04C2/3562
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) | 1919-12-12 | 1920-06-12 | 1920-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-12-12 | 1924-06-12 | 1924-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-12-12 | 1928-06-12 | 1928-12-12 | $7700.00 | Window Closed / Lapsed |