US2420478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground cable distributing unit
Assignee: Cook Electric Co
•
Filing: 1942-07-20
•
Granted: 1947-05-13
•
Expires: 1962-07-20
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hasselhorn
- 👤 Roy M Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:26
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/02; H02G15/06; H02G15/076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US870053A
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US965684A
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US1109726A
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US1083582A
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GB204054A
Cited
US1951457A
Cited
US2078969A
Cited
US2083054A
Cited
US2184574A
Cited
US2294482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-12 | 1950-11-11 | 1951-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-12 | 1954-11-11 | 1955-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-12 | 1958-11-11 | 1959-05-13 | $7700.00 | Window Closed / Lapsed |