US2456518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
V-flat drive
Assignee: Dayton Rubber Co
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Filing: 1944-12-29
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Granted: 1948-12-14
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Expires: 1964-12-29
Abstract
No abstract record available.
Inventors
- 👤 Edgar K Lofton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:44
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/02; B; B61; B61D; B61D43/00; Y; Y02; Y02T; Y02T30/00
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) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |