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Class Information
Number: 52/575
Name: Static structures (e.g., buildings) > Trapezoid-shaped block (e.g., keystone)
Description: Structure including a module having two opposed faces which extend in a nonparallel relationship transversely of the major surfaces of a barrier in which the module is a component, e.g., keystone block.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6782671 |
Sheet of shingles |
Aug. 31, 2004 |
| 6651401 |
Retaining wall and method of wall construction |
Nov. 25, 2003 |
| 6494009 |
Green concrete retaining wall and method for constructing the same |
Dec. 17, 2002 |
| 6311444 |
Lightweight concrete masonry unit |
Nov. 6, 2001 |
| 6263636 |
Building constructions using beams and related method |
Jul. 24, 2001 |
| 5870871 |
Sump liner and method of installation |
Feb. 16, 1999 |
| 5685120 |
Building system |
Nov. 11, 1997 |
| 5603196 |
Shield wall structure of a magnetically-shielded room and process for producing a magnetically-shielded room |
Feb. 18, 1997 |
| 5222342 |
Component elements of protecting structures against erosion and process for assembling and placing the protection structure |
Jun. 29, 1993 |
| 5159801 |
Mortar securing building brick |
Nov. 3, 1992 |
| 5146855 |
Arrangement for the complementary interconnection of round table tops |
Sep. 15, 1992 |
| 5069015 |
Keystone set |
Dec. 3, 1991 |
| 4873810 |
Elements having a multi-directional cellular structure whose inertia may vary, and methods of manufacture |
Oct. 17, 1989 |
| 4736550 |
Interlocking tetrahedral building block and structural supporting system |
Apr. 12, 1988 |
| 4416097 |
Universal beam construction system |
Nov. 22, 1983 |
| 4112648 |
Wall structure of hot fluid chamber |
Sep. 12, 1978 |
| 4095386 |
Prismatic interlocking structural module |
Jun. 20, 1978 |
| 3965637 |
Composite block for refractory linings of furnaces |
Jun. 29, 1976 |
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