US2861643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire engaged friction drive for vehicle traction wheel
Assignee: Wald Indusries Inc
•
Filing: 1954-04-05
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Granted: 1958-11-25
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Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jr John R Wald
- 👤 Rufus W Wilson
- 👤 Fry Carl La Rue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:36
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; B62D49/0621
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189605009A
Cited
CH88984A
Cited
US2328233A
Cited
US2523439A
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US2623603A
Cited
US2544831A
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US2578886A
Cited
US2691421A
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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) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |