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US2842719A
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Electrical protective apparatus
Assignee: RCA Corp
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Filing: 1954-10-18
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Granted: 1958-07-08
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Expires: 1974-10-18
Abstract
No abstract record available.
Inventors
- 👤 Winslow L Hurford
- 👤 William J Neely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:08
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)
US1861929A
Cited
US2424298A
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US2460860A
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US2548818A
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US2617024A
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US2619525A
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US2654052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |