US2426439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal portraying apparatus
Assignee: General Electric Co
•
Filing: 1943-10-08
•
Granted: 1947-08-26
•
Expires: 1963-10-08
Abstract
No abstract record available.
Inventors
- 👤 Robert B Dome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:20
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/28; Y; Y10; Y10T; Y10T403/00; Y10T403/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20945E
Cited
US2089430A
Cited
US2146862A
Cited
US2208379A
Cited
US2312761A
Cited
US2313966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-25 | 1951-02-24 | 1951-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-25 | 1955-02-24 | 1955-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-25 | 1959-02-24 | 1959-08-26 | $7700.00 | Window Closed / Lapsed |