US2468829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm and protector
Assignee: Individual
•
Filing: 1947-07-09
•
Granted: 1949-05-03
•
Expires: 1967-07-09
Abstract
No abstract record available.
Inventors
- 👤 Porta Philip La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:35
CPC Classifications
G; G08; G08B; G08B15/00; G08B15/02; Y; Y10; Y10S; Y10S116/00; Y10S116/44
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) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |