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US530874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine
Assignee: —
•
Filing: —
•
Granted: 1894-12-11
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Expires: 1911-12-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:41
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/08; F01C1/12; F01C1/14; F01C1/20; B; B06; B06B; B06B1/00; B06B1/10; B06B1/16; B06B1/161; B06B1/162
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) | 1897-12-10 | 1898-06-11 | 1898-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1901-12-11 | 1902-06-12 | 1902-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1905-12-11 | 1906-06-12 | 1906-12-12 | $7700.00 | Window Closed / Lapsed |