Patent US2577165A successfully refreshed from Google Patents.
US3049699A
Expired / Lapsed
US
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Sound actuated detection and alarm system
Assignee: Individual
•
Filing: 1960-01-26
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Granted: 1962-08-14
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Expires: 1980-01-26
Abstract
No abstract record available.
Inventors
- 👤 Howard M Larrick
- 👤 Walter R Brosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/16; G08B13/1654; G08B13/1672
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2428290A
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US2549865A
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US2587715A
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US2832915A
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US2689929A
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US2709251A
Cited
US2806082A
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US2834918A
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US2936426A
Cited
US2969530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |