US845816A
Expired / Lapsed
US
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Centripetal-centrifugal pump and condenser.
Assignee: VINCENT C TOMPKINS
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Filing: 1902-03-05
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Granted: 1907-03-05
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Expires: 1922-03-05
Abstract
No abstract record available.
Inventors
- 👤 Roscoe S Prindle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
F; F04; F04D; F04D1/00; F04D1/006; F04D3/00; F04D3/02; F04D1/02; F04D13/00; F04D13/02; F04D13/04; F04D13/043; F04D29/00; F04D29/04; F04D29/046; F04D29/047; F04D29/0473
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) | 1910-03-04 | 1910-09-03 | 1911-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-03-04 | 1914-09-03 | 1915-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-03-04 | 1918-09-03 | 1919-03-05 | $7700.00 | Window Closed / Lapsed |