US2515255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conduit wiring system
Assignee: John B. Pierce Laboratory
•
Filing: 1946-02-26
•
Granted: 1950-07-18
•
Expires: 1966-02-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph F O'brien
- 👤 Earl S Boynton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:19
CPC Classifications
H; H01; H01R; H01R25/00; H01R25/16; H01R25/161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1106103A
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US1817034A
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US1905143A
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US2023004A
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US2064199A
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US1995855A
Cited
US1966379A
Cited
US2137536A
Cited
US2267745A
Cited
US2250276A
Cited
US2455231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |