US3303264A
Expired / Lapsed
US
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Dual service conduit and outlet system
Assignee: Granite City Steel Co
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Filing: 1964-06-29
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Granted: 1967-02-07
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 John F Saul
- 👤 Richard A Klinkman
- 👤 Reuscher Junior William
- 👤 Parrish Miley Randolph
- 👤 Robert E Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/48; H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/18; H02G3/185; H02G3/28; H02G3/283
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
173 words
IN A DUAL ELECTRICAL HIGH VOLTAGE AND LOW VOLTAGE UNDER-FLOOR SERVICE CONDUIT AND OUTLET SYSTEM THE IMPROVEMENT OF: AN ELONGATED UNDER-FLOOR CONDUIT MEMBER PROVIDING EXTERIOR WALLS AND A CONTINUOUS INTERIOR WALL WHICH SEPARATES THE INTERIOR INTO ADJACENT ELONGATED CELLULAR SPACES ENCLOSED BY SAID EXTERIOR WALLS BY EXTENDING BETWEEN TWO SPACED OPPOSED EXTERIOR WALLS, ONE OF SAID TWO EXTERIOR WALLS OF SAID CONDUIT MEMBER BEING FORMED WITH AN ELONGATED WRINKLE WHICH IS ENGAGED WITH SAID INTERIOR WALL TO FORM A SEAL BETWEEN THE ADJACENT CELLULAR SPACES AND HAVING AN OUTWARDLY OPENING ACCESS APERTURE THAT EXPOSES SAID ADJACENT CELLULAR SPACES WITHIN SAID CONDUIT MEMBER, AND SAID INTERIOR WALL BEING INTEGRAL WITH THE OTHER OF SAID EXTERIOR WALLS; AN ACCESS BOX MOUNTED ON SAID CONDUIT MEMBER OVER SAID APERTURE, SAID ACCESS BOX BEING OPENED AT OPPOSITE ENDS FOR ACCESS TO SAID CELLULAR SPACES AND HAVING A DIVIDER WALL THEREIN TO DEFINE TWO ADJACENT PASSAGES CORRESPONDING WITH AND OPEN TO SAID ELONGATED CELLULAR SPACES, SAID DIVIDER WALL ALIGNING WITH SAID INTERIOR WALL TO PRESERVE THE SEPARATION OF
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |