US2712759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable ratio belt drive
Assignee: Individual
•
Filing: 1952-07-05
•
Granted: 1955-07-12
•
Expires: 1972-07-05
Abstract
No abstract record available.
Inventors
- 👤 Guibert Francis Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:08
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/02; F; F16; F16H; F16H9/00; F16H9/02; F16H9/04; F16H9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US433660A
Cited
US593554A
Cited
US594622A
Cited
US745030A
Cited
GB190806452A
Cited
GB191227938A
Cited
GB425540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |