Patent US1795040A successfully refreshed from Google Patents.
US1795040A
Expired / Lapsed
US
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Rotary machine
Assignee: SF Bowser and Co Inc
•
Filing: 1927-07-21
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Granted: 1931-03-03
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Expires: 1947-07-21
Abstract
No abstract record available.
Inventors
- 👤 Paul B Renfrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:50
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/08; F01C1/10; F01C1/102; F01C21/00; F01C21/008
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) | 1934-03-02 | 1934-09-01 | 1935-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-02 | 1938-09-01 | 1939-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-02 | 1942-09-01 | 1943-03-03 | $7700.00 | Window Closed / Lapsed |