Patent US2930504A successfully refreshed from Google Patents.
US2930504A
Expired / Lapsed
US
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Electrical junction box
Assignee: National Supply Co
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Filing: 1957-07-22
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Granted: 1960-03-29
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Expires: 1977-07-22
Abstract
No abstract record available.
Inventors
- 👤 James W Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:01
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/18; H02G3/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1626570A
Cited
US1839258A
Cited
US1893268A
Cited
US2043648A
Cited
GB380791A
Cited
US2046351A
Cited
US2611500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |