US2947591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toll highway recorder
Assignee: International Business Machines Corp
•
Filing: 1953-12-15
•
Granted: 1960-08-02
•
Expires: 1973-12-15
Abstract
No abstract record available.
Inventors
- 👤 William F Henry
- 👤 Joseph J Purcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:36
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/14; G07F17/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2307487A
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US2172511A
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US2195868A
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US2313626A
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US2313627A
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US2351405A
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US2494401A
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US2539835A
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US2527405A
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US2487463A
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US2672393A
Cited
US2678165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |