US3525830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock switch devices
Assignee: General Alarm Corp
•
Filing: 1967-03-14
•
Granted: 1970-08-25
•
Expires: 1987-03-14
Abstract
No abstract record available.
Inventors
- 👤 Paul Maddison Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:14
CPC Classifications
E; E05; E05B; E05B45/00; E05B45/06; E05B45/08; E05B45/083; E05B45/086; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5146; Y10T70/515
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2756300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |