Patent CH541963A successfully refreshed from Google Patents.
Patent US3524180A successfully refreshed from Google Patents.
US3524180A
Expired / Lapsed
US
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Passive intrusion detecting system
Assignee: Raytheon Co
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Filing: 1967-01-27
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Granted: 1970-08-11
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Expires: 1987-01-27
Abstract
No abstract record available.
Inventors
- 👤 Philip M Cruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:59
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/189; G08B13/19; Y; Y10; Y10S; Y10S250/00; Y10S250/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1877279A
Cited
US2016036A
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US3036219A
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US3396279A
Cited
US3309689A
Cited
US3381219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |