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US3609926A Expired / Lapsed US ⏱️ 0.0 years remaining

Block structure

Assignee: Individual
•
Filing: 1969-02-26
•
Granted: 1971-10-05
•
Expires: 1989-02-26
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Abstract

Abstract A BUILDING BLOCK DEFINING A SERIES OF APERTURES EXTENDING THERETHROUGH FROM THE TOP WALL SURFACE TO THE BOTTOM WALL SURFACE, AND VERTICALLY EXTENDING GROOVES DEFINED IN EACH END WALL SURFACE. EXTENDING GROOVES DEFINED IN INSERTABLE INTO EACH APERTURE SO AS TO PROJECT FROM THE BLOCK, AND A SIMILAR BLOCK IS POSITIONABLE ON TOP OF THE FIRST BLOCK WITH ITS APERTURES INSERTED OVER THE POSITIONING SLEEVES. THE END GROOVES OF ABUTTING BLOCKS MATE WITH EACH OTHER TO FORM SLOTS, AND WEDGE MEMBERS ARE INSERTABLE INTO THE SLOTS TO POSITVELY ALIGN THE ABUTTING BLOCKS. MORTAR IS POURED DOWN THROUGH THE ALIGNED APERTURES AND SLEEVES OF THE BLOCKS TO POSITIVELY LOCK THE BLOCKS TOGETHER TO FORM A RIGID STRUCTURE.

Inventors

  • 👤 George B Muse

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 09:10
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/42; E04B2/44; E04B2002/0202; E04B2002/0243; F; F16; F16B; F16B19/00; F16B19/002; F16B19/004

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-10-04 1975-04-05 1975-10-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-04 1979-04-05 1979-10-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-04 1983-04-05 1983-10-05 $7700.00 Window Closed / Lapsed

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