Patent US246321A successfully refreshed from Google Patents.
US779900A
Expired / Lapsed
US
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Rotary engine.
Assignee: SIMPLEX ENGINE Co
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Filing: 1903-08-13
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Granted: 1905-01-10
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Expires: 1923-08-13
Abstract
No abstract record available.
Inventors
- 👤 Louis Gardiner Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:11
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/06; B60S1/16; B60S1/18; F; F02; F02B; F02B53/00
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) | 1908-01-10 | 1908-07-11 | 1909-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-01-10 | 1912-07-11 | 1913-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-01-10 | 1916-07-11 | 1917-01-10 | $7700.00 | Window Closed / Lapsed |