US3440635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Police alarm
Assignee: HARRIS B HULL
•
Filing: 1965-06-28
•
Granted: 1969-04-22
•
Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Harris B Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:11
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/273; G; G08; G08B; G08B15/00; G08B15/001; G08B25/00; G08B25/01; G08B25/016; G08B27/00; G08B27/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US683692A
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US1081884A
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US1505326A
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US1640929A
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US1993436A
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US2135476A
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US2106658A
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US2608612A
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US2766358A
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US3111656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |