US2600581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic circuit control for burglar alarms
Assignee: Individual
•
Filing: 1949-07-19
•
Granted: 1952-06-17
•
Expires: 1969-07-19
Abstract
No abstract record available.
Inventors
- 👤 Schenendorf Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:15
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0073; G; G08; G08B; G08B13/00; G08B13/02; G08B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1287896A
Cited
US2384948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |