Patent US3524545A successfully refreshed from Google Patents.
US3524545A
Expired / Lapsed
US
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Apparatus for random filing and retrieval of codes items
Assignee: Individual
•
Filing: 1968-04-30
•
Granted: 1970-08-18
•
Expires: 1988-04-30
Abstract
No abstract record available.
Inventors
- 👤 George J Doundoulakis
- 👤 Arthur Doulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:25
CPC Classifications
G; G06; G06K; G06K21/00; G06K21/002; G06K21/005; G06K17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3199674A
Cited
US3273567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |