US2437540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed transmission
Assignee: Chain Belt Co
•
Filing: 1944-06-26
•
Granted: 1948-03-09
•
Expires: 1964-06-26
Abstract
No abstract record available.
Inventors
- 👤 Klaucke Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:08
CPC Classifications
F; F16; F16H; F16H9/00; F16H9/02; F16H9/04; F16H9/12; F16H9/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2024460A
Cited
US2070756A
Cited
US2101084A
Cited
US2112157A
Cited
US2079351A
Cited
US2226236A
Cited
US2310081A
Cited
US2347479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-09 | 1951-09-08 | 1952-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-09 | 1955-09-08 | 1956-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-09 | 1959-09-08 | 1960-03-09 | $7700.00 | Window Closed / Lapsed |