Patent US1649923A successfully refreshed from Google Patents.
US1649923A
Expired / Lapsed
US
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Connecter for track circuits and train-control systems
Assignee: Individual
•
Filing: 1925-10-23
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Granted: 1927-11-22
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Expires: 1945-10-23
Abstract
No abstract record available.
Inventors
- 👤 Ernest K Post
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:04
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/58; H01R4/64; H01R11/00; H01R11/11; H01R11/26; Y; Y10; Y10S; Y10S16/00; Y10S16/41; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7056; Y10T403/7058
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) | 1930-11-21 | 1931-05-23 | 1931-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-11-21 | 1935-05-23 | 1935-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-11-21 | 1939-05-23 | 1939-11-22 | $7700.00 | Window Closed / Lapsed |