US3526872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensating switch for sonar
Assignee: United States Department of the Navy
•
Filing: 1966-11-25
•
Granted: 1970-09-01
•
Expires: 1986-11-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Gulick Jr
- 👤 Harlan H Knapp Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:33
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/66; G01S3/00; G01S3/80; G01S3/802; G01S3/805; G01S3/807; G01S3/808; G01S3/8083; H; H03; H03K; H03K17/00; H03K17/51; H03K17/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3108251A
Cited
US3160850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |