Patent US543204A successfully refreshed from Google Patents.
Patent US942360A successfully refreshed from Google Patents.
US942360A
Expired / Lapsed
US
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Regulating-valve.
Assignee: CHARLES S GROVER
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Filing: 1908-08-24
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Granted: 1909-12-07
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Expires: 1928-08-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:39
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/0616; G05D16/0619; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7796; Y10T29/00; Y10T29/49; Y10T29/49405
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) | 1912-12-06 | 1913-06-07 | 1913-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-12-06 | 1917-06-07 | 1917-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-12-06 | 1921-06-07 | 1921-12-07 | $7700.00 | Window Closed / Lapsed |