US2739489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical gear drive and calibrating mechanism or the like
Assignee: Hoffman Electronics Corp
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Filing: 1955-04-26
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Granted: 1956-03-27
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Expires: 1975-04-26
Abstract
No abstract record available.
Inventors
- 👤 Charles L Vice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:05
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/021; F16H57/022; F16H35/00; F16H35/008; G; G05; G05G; G05G23/00; G05G2700/00; G05G2700/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1956; Y10T74/19585
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |