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Patent US2913997A successfully refreshed from Google Patents.
US2913997A
Expired / Lapsed
US
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Mobile unit and track system therefor
Assignee: Individual
•
Filing: 1958-07-30
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Granted: 1959-11-24
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Expires: 1978-07-30
Abstract
No abstract record available.
Inventors
- 👤 Carl W Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:11
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/12; A63H18/02; G; G09; G09F; G09F11/00; G09F11/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1454806A
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US2132187A
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US2394168A
Cited
US2685844A
Cited
US2619553A
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US2645187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |