US2558524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay construction
Assignee: NORTH ELECTRIC MANUFACTURING Co
•
Filing: 1946-10-04
•
Granted: 1951-06-26
•
Expires: 1966-10-04
Abstract
No abstract record available.
Inventors
- 👤 Robert K Mcberty
- 👤 Donald S Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:32
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1128562A
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US928104A
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US1324452A
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US1272317A
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US1475166A
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US1681473A
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US1646956A
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US1800256A
Cited
US1974852A
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FR748050A
Cited
US2396332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |