US2799853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Home emergency alarm
Assignee: Individual
•
Filing: 1953-12-10
•
Granted: 1957-07-16
•
Expires: 1973-12-10
Abstract
No abstract record available.
Inventors
- 👤 Robert C Colwell
- 👤 Richard A Raese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:11
CPC Classifications
G; G08; G08B; G08B27/00; H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; H02J13/1315; Y; Y02; Y02B; Y02B90/00; Y02B90/20; Y02E; Y02E60/00; Y04; Y04S; Y04S10/00; Y04S10/50; Y04S10/52; Y04S40/00; Y04S40/12; Y04S40/121
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) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |