Patent US948648A successfully refreshed from Google Patents.
US948648A
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US
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Automatic circuit-controller for water-purifying apparatus.
Assignee: Mcdowell Manufacturing Co
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Filing: 1907-10-18
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Granted: 1910-02-08
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Expires: 1927-10-18
Abstract
No abstract record available.
Inventors
- 👤 Harry Buxton Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:21
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/40; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/7898; Y10T137/7903; Y10T137/8593; Y10T137/86928; Y10T137/87016; Y10T137/87917; Y10T137/88022; Y10T137/8803
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) | 1913-02-07 | 1913-08-09 | 1914-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-02-07 | 1917-08-09 | 1918-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-02-07 | 1921-08-09 | 1922-02-08 | $7700.00 | Window Closed / Lapsed |