US2633031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pitch sheave
Assignee: BROWNING Manufacturing Co Inc
•
Filing: 1951-01-24
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Granted: 1953-03-31
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Expires: 1971-01-24
Abstract
No abstract record available.
Inventors
- 👤 John N Browning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:51
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/52; F16H55/56; F16H55/566; Y; Y10; Y10T; Y10T403/00; Y10T403/33; Y10T403/70; Y10T403/7018; Y10T403/7021; Y10T403/7047
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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |