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Patent US2904653A successfully refreshed from Google Patents.
US2904653A
Expired / Lapsed
US
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Relays
Assignee: Individual
•
Filing: 1955-02-17
•
Granted: 1959-09-15
•
Expires: 1975-02-17
Abstract
No abstract record available.
Inventors
- 👤 Nick F Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:31
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US429377A
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US1219008A
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US1845992A
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US2339610A
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US2384287A
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US2463333A
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US2423116A
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US2438745A
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US2623964A
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US2707774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |