US3279470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card index device
Assignee: Zephyr American Corp
•
Filing: 1964-04-16
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Granted: 1966-10-18
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Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Hildaur L Neilsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:26
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/28; G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA511346A
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CA675662A
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GB106392A
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US1976249A
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US2389923A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |