US2417434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical stop device
Assignee: AT&T Inc
•
Filing: 1945-02-13
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Granted: 1947-03-18
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Expires: 1965-02-13
Abstract
No abstract record available.
Inventors
- 👤 Edward D Mead
- 👤 Frank M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:06
CPC Classifications
G; G05; G05G; G05G15/00; G05G15/04; F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/2015; F16H35/00; F16H2035/006; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18688
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) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |