US2425999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal portraying apparatus
Assignee: General Electric Co
•
Filing: 1943-12-20
•
Granted: 1947-08-19
•
Expires: 1963-12-20
Abstract
No abstract record available.
Inventors
- 👤 Howard M Crosby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:34
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1929067A
Cited
US2135171A
Cited
US2121103A
Cited
US2121359A
Cited
US2297126A
Cited
US2275974A
Cited
US2228266A
Cited
US2265848A
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) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |