US2770868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self locking roller, tire, and tread foundation
Assignee: Individual
•
Filing: 1952-07-02
•
Granted: 1956-11-20
•
Expires: 1972-07-02
Abstract
No abstract record available.
Inventors
- 👤 John G Streckfus
- 👤 Godwin Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:37
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/07; B41; B41N; B41N7/00; B41N7/06; B65G2207/00; B65G2207/22; Y; Y10; Y10S; Y10S474/00; Y10S474/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US832884A
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US1576924A
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US1780306A
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US2083766A
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US2257025A
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US2231738A
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US2639560A
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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) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |