Patent US1038477A successfully refreshed from Google Patents.
US1038477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump.
Assignee: Individual
•
Filing: 1912-03-12
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Granted: 1912-09-10
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Expires: 1932-03-12
Abstract
No abstract record available.
Inventors
- 👤 Dexter C Baker
- 👤 Harvey F Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:46
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863
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) | 1915-09-10 | 1916-03-11 | 1916-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-09-10 | 1920-03-11 | 1920-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-09-10 | 1924-03-11 | 1924-09-10 | $7700.00 | Window Closed / Lapsed |