Patent US3531604A successfully refreshed from Google Patents.
US3531604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trigger switch for actuating an alarm
Assignee: JOHN J IMBURGIA
•
Filing: 1969-06-04
•
Granted: 1970-09-29
•
Expires: 1989-06-04
Abstract
No abstract record available.
Inventors
- 👤 John J Imburgia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:37
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/42; H01H3/00; H01H3/02; H01H3/022; H01H37/00; H01H37/74; H01H37/76; H01H37/767; H01H2003/0233
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2955180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |