Patent US2805304A successfully refreshed from Google Patents.
US2805304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protectors for electric circuits
Assignee: McGraw Edison Co
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Filing: 1955-07-11
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Granted: 1957-09-03
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Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Martin R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:17
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/74; H01H37/76; H01H37/761; H01H2037/762
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |