US2648351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed remote control for valves
Assignee: Curtis Automotive Devices Inc
•
Filing: 1949-04-14
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Granted: 1953-08-11
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Expires: 1969-04-14
Abstract
No abstract record available.
Inventors
- 👤 Russell R Curtis
- 👤 Ewald J Kimm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:52
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/528; B; B60; B60H; B60H1/00; B60H1/00485; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18936; Y10T74/18992; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/2045; Y10T74/20558
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US190066A
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US1581761A
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GB239020A
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US1613671A
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US1632024A
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US1772341A
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GB328204A
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GB337569A
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US1893059A
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US2243581A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |