US2425490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Business machine
Assignee: —
•
Filing: —
•
Granted: 1947-08-12
•
Expires: 1964-08-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:35
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/02; G06K1/025; B; B26; B26F; B26F1/00; B26F1/02; B26F1/04; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1219766A
Cited
US1174427A
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US2044842A
Cited
US2199547A
Cited
US1985178A
Cited
US1976617A
Cited
GB472776A
Cited
US2126666A
Cited
US2157980A
Cited
US2278118A
Cited
US2185697A
Cited
US2240563A
Cited
US2346250A
Cited
US2304277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |