Patent US2952835A successfully refreshed from Google Patents.
US2952835A
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US
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Signalling device involving physically movable components
Assignee: Ross Radio Corp
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Filing: 1959-06-22
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Granted: 1960-09-13
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Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Aiken William Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:39
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G09; G09F; G09F11/00; G09F11/30; G09F9/00; G09F9/30; G09F9/37; G09F9/372
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |