Patent US843525A successfully refreshed from Google Patents.
US843525A
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US
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Automatic steam and hot-water safety-cock.
Assignee: Individual
•
Filing: 1906-02-13
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Granted: 1907-02-05
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Expires: 1926-02-13
Abstract
No abstract record available.
Inventors
- 👤 John A Frey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:22
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/168; F16K27/00; F16K27/06; F16K27/062; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7878; Y10T137/8593; Y10T137/87265; Y10T137/8733; Y10T137/87378; Y10T137/87394; Y10T137/87523; Y10T137/87555; Y10T137/87917; Y10T137/88054
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) | 1910-02-04 | 1910-08-06 | 1911-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-02-04 | 1914-08-06 | 1915-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-02-04 | 1918-08-06 | 1919-02-05 | $7700.00 | Window Closed / Lapsed |