US3457560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Undervoltage and overvoltage alarm circuit
Assignee: Individual
•
Filing: 1965-09-24
•
Granted: 1969-07-22
•
Expires: 1985-09-24
Abstract
No abstract record available.
Inventors
- 👤 Milton Arthur Mckinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:42
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16533; G01R19/16538; H; H02; H02H; H02H3/00; H02H3/20; H02H3/202
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1455458A
Cited
US2450450A
Cited
US3113299A
Cited
US3227895A
Cited
US3311907A
Cited
US3354448A
Cited
US3243658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |