US1909418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary machine
Assignee: Individual
•
Filing: 1929-10-28
•
Granted: 1933-05-16
•
Expires: 1949-10-28
Abstract
No abstract record available.
Inventors
- 👤 Donald W Norwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:03
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/08; F01C1/082; F01C1/084; F01C1/12; F01C1/14; F01C1/18
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) | 1936-05-15 | 1936-11-14 | 1937-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-05-15 | 1940-11-14 | 1941-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-05-15 | 1944-11-14 | 1945-05-16 | $7700.00 | Window Closed / Lapsed |