US2455407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed transmission
Assignee: Individual
•
Filing: 1947-02-21
•
Granted: 1948-12-07
•
Expires: 1967-02-21
Abstract
No abstract record available.
Inventors
- 👤 Christmann John Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:12
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/42; F16H3/00; F16H3/44; F16H9/00; F16H9/02; F16H9/24; F16H2720/00; F16H2720/02
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) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |