Patent US2907521A successfully refreshed from Google Patents.
US2907521A
Expired / Lapsed
US
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Toll highway recorder
Assignee: International Business Machines Corp
•
Filing: 1953-12-21
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Granted: 1959-10-06
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Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 James M Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:50
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/14; G07F17/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2155928A
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US2268447A
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US2551977A
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US2536837A
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US2603419A
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US2659533A
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |