US2584447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed chain driving device
Assignee: Individual
•
Filing: 1947-09-03
•
Granted: 1952-02-05
•
Expires: 1967-09-03
Abstract
No abstract record available.
Inventors
- 👤 Hayot Louis Adolphe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:06
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; F16H61/6625; B; B62; B62M; B62M9/00; B62M9/04; B62M9/06; B62M9/08; F16H9/00; F16H9/02; F16H9/24
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) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |