Patent US2125283A successfully refreshed from Google Patents.
US2125283A
Expired / Lapsed
US
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Pump for semifluids
Assignee: LEO S MADLEM
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Filing: 1936-05-06
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Granted: 1938-08-02
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Expires: 1956-05-06
Abstract
No abstract record available.
Inventors
- 👤 William B Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/0003; F04B7/0011; F04B1/00; F04B1/02; F04B15/00; F04B15/02; Y; Y10; Y10S; Y10S417/00; Y10S417/90
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) | 1941-08-01 | 1942-01-31 | 1942-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-08-01 | 1946-01-31 | 1946-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-08-01 | 1950-01-31 | 1950-08-02 | $7700.00 | Window Closed / Lapsed |