US2860522A
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Assignee: FRANK H HOWLETT
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Filing: 1956-07-10
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Granted: 1958-11-18
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Expires: 1976-07-10
Abstract
No abstract record available.
Inventors
- 👤 George H Howlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:06
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/40; F16H63/44; F16H59/00; F16H59/02; F16H59/0278; F16H2059/0286; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18096; Y10T74/19; Y10T74/19167; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085; Y10T74/20098
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |