Patent US2462336A successfully refreshed from Google Patents.
US3551796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio output device for testing leakage and continuity of a circuit
Assignee: United States Department of the Army
•
Filing: 1969-01-03
•
Granted: 1970-12-29
•
Expires: 1989-01-03
Abstract
No abstract record available.
Inventors
- 👤 James D Holder
- 👤 Hugh W Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:35
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |