Patent US1441344A successfully refreshed from Google Patents.
US1441344A
Expired / Lapsed
US
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Electric motor and rotary pump
Assignee: WERNICKE HATCHER PUMP Co
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Filing: 1921-02-19
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Granted: 1923-01-09
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Expires: 1941-02-19
Abstract
No abstract record available.
Inventors
- 👤 William A Hatcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:42
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/14; F; F04; F04C; F04C18/00; F04C18/30; F04C18/34; F04C18/344; F04C18/348; Y; Y10; Y10S; Y10S417/00; Y10S417/902
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) | 1926-01-08 | 1926-07-10 | 1927-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-01-08 | 1930-07-10 | 1931-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-01-08 | 1934-07-10 | 1935-01-09 | $7700.00 | Window Closed / Lapsed |