Patent US2108786A successfully refreshed from Google Patents.
US2108786A
Expired / Lapsed
US
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Duplex high pressure rotary pump
Assignee: PACIFIC PUMP WORKS
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Filing: 1936-09-23
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Granted: 1938-02-22
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Expires: 1956-09-23
Abstract
No abstract record available.
Inventors
- 👤 George E Bigelow
- 👤 Arthur R Weis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:56
CPC Classifications
F; F04; F04D; F04D1/00; F04D1/06; F04D1/063
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) | 1941-02-21 | 1941-08-23 | 1942-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-02-21 | 1945-08-23 | 1946-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-02-21 | 1949-08-23 | 1950-02-22 | $7700.00 | Window Closed / Lapsed |