Patent US2779256A successfully refreshed from Google Patents.
US2779256A
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Anti-friction former shoes
Assignee: Individual
•
Filing: 1953-06-04
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Granted: 1957-01-29
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Expires: 1973-06-04
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Keller
- 👤 Charles W Garvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:24
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/78; B29C65/7802; B29C65/7835; B29C53/00; B29C53/02; B29C53/10; B29C53/36; B29C53/38; B29C53/48; B29C53/50; B29C65/7858; B29C65/7888; B29C65/7894; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/49; B29C66/70; B29C66/71; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29L; B29L2023/00; B29L2023/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |