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US2809298A
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US
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Automatic selector system
Assignee: Diamond Power Specialty Corp
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Filing: 1954-02-26
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Granted: 1957-10-08
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Expires: 1974-02-26
Abstract
No abstract record available.
Inventors
- 👤 Cawein Madison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/18; H04N7/183; H04N5/00; H04N5/222; H04N5/262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2164297A
Cited
US2240420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |