Patent US2656524A successfully refreshed from Google Patents.
US2656524A
Expired / Lapsed
US
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Data storage and reproducing apparatus
Assignee: Individual
•
Filing: 1949-08-09
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Granted: 1953-10-20
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Expires: 1969-08-09
Abstract
No abstract record available.
Inventors
- 👤 Darrin H Gridley
- 👤 Anthony J Stecca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
G; G08; G08C; G08C15/00; G08C15/06; G08C15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |