Patent US930646A successfully refreshed from Google Patents.
US930646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism for hot-water pumps.
Assignee: Individual
•
Filing: 1909-03-09
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Granted: 1909-08-10
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Expires: 1929-03-09
Abstract
No abstract record available.
Inventors
- 👤 Charles Caille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/20; F02M59/36; F04; F04B; F04B7/00; F04B7/0042; F04B7/0053
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) | 1912-08-09 | 1913-02-08 | 1913-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-08-09 | 1917-02-08 | 1917-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-08-09 | 1921-02-08 | 1921-08-10 | $7700.00 | Window Closed / Lapsed |