Patent US873644A successfully refreshed from Google Patents.
US873644A
Expired / Lapsed
US
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Centrifugal pump.
Assignee: Individual
•
Filing: 1907-05-31
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Granted: 1907-12-10
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Expires: 1927-05-31
Abstract
No abstract record available.
Inventors
- 👤 Peter J Wickblom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:50
CPC Classifications
F; F01; F01D; F01D15/00; F01D15/06; F01D15/062; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2842; Y10T137/2877
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) | 1910-12-09 | 1911-06-10 | 1911-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-12-09 | 1915-06-10 | 1915-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-12-09 | 1919-06-10 | 1919-12-10 | $7700.00 | Window Closed / Lapsed |