Patent US1889208A successfully refreshed from Google Patents.
US1889208A
Expired / Lapsed
US
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Motor generator
Assignee: HARRY R ROGERS
•
Filing: 1932-03-31
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Granted: 1932-11-29
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Expires: 1952-03-31
Abstract
No abstract record available.
Inventors
- 👤 William E Masterson
- 👤 Price Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:35
CPC Classifications
H; H02; H02K; H02K47/00; H02K47/02; H02K47/04
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) | 1935-11-29 | 1936-05-30 | 1936-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-29 | 1940-05-30 | 1940-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-29 | 1944-05-30 | 1944-11-29 | $7700.00 | Window Closed / Lapsed |