US3423674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Theft-detection system for library use including a plurality of hall cells
Assignee: Nytronics Inc
•
Filing: 1965-06-29
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Granted: 1969-01-21
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Expires: 1985-06-29
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Goldsmith
- 👤 Harold S Pike Jr
- 👤 Ernest Donald Belanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:21
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; G08B13/24; G08B13/2402; G08B13/2405; G08B13/2408; G08B13/2465; G08B13/2468; G08B13/2471; G08B13/2474
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) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |