US2495490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card record apparatus
Assignee: Individual
•
Filing: 1944-01-18
•
Granted: 1950-01-24
•
Expires: 1964-01-18
Abstract
No abstract record available.
Inventors
- 👤 John W Whitson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:14
CPC Classifications
G; G06; G06K; G06K21/00; G06K21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1704259A
Cited
US1846779A
Cited
US2002807A
Cited
US2002808A
Cited
US2013012A
Cited
FR752581A
Cited
US2146063A
Cited
US2269767A
Cited
US2315860A
Cited
US2379943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |