US3515892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load disabling circuit
Assignee: United States Department of the Army
•
Filing: 1968-04-26
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Granted: 1970-06-02
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Expires: 1988-04-26
Abstract
No abstract record available.
Inventors
- 👤 Donald R Wittbrodt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/62; H03K17/6285; H02; H02H; H02H11/00; H03K17/72; H03K17/73; H03K17/74; H03K17/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3311795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |