Patent US2755330A successfully refreshed from Google Patents.
US2755330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End structure for electrical conduit
Assignee: Individual
•
Filing: 1951-05-11
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Granted: 1956-07-17
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Expires: 1971-05-11
Abstract
No abstract record available.
Inventors
- 👤 Ludwig Sidney
- 👤 Robert R Cull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/084; H01Q1/12; H01Q1/1207; H01Q1/1214; Y; Y10; Y10S; Y10S439/00; Y10S439/916
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |