← Back to Patent Explorer
US3303264A Expired / Lapsed US ⏱️ 0.0 years remaining

Dual service conduit and outlet system

Assignee: Granite City Steel Co
•
Filing: 1964-06-29
•
Granted: 1967-02-07
•
Expires: 1984-06-29
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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)

US2073490A Cited
US2297179A Cited
US3110754A Cited

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag