Patent US2894176A successfully refreshed from Google Patents.
US2894176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load protection circuits or the like
Assignee: Hoffman Electronics Corp
•
Filing: 1954-11-04
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Granted: 1959-07-07
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Expires: 1974-11-04
Abstract
No abstract record available.
Inventors
- 👤 James M Hegarty
- 👤 Murray J Hillman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:35
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/52; H03F1/54; H03F1/548
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2369589A
Cited
US2548818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |