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Class Information
Number: D25/114
Name: Building units and construction elements > Architectural stock material > Construction block or brick type (20) > Perforated or openwork (21)
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| D307056 |
Brick |
Apr. 3, 1990 |
| D305573 |
Brick |
Jan. 16, 1990 |
| D305570 |
Brick |
Jan. 16, 1990 |
| D305572 |
Brick |
Jan. 16, 1990 |
| D305571 |
Brick |
Jan. 16, 1990 |
| D305460 |
Brick |
Jan. 9, 1990 |
| D305365 |
Brick |
Jan. 2, 1990 |
| D304501 |
Four cavity building block |
Nov. 7, 1989 |
| D304500 |
Six cavity building block |
Nov. 7, 1989 |
| D300254 |
Retaining wall block |
Mar. 14, 1989 |
| D300253 |
Retaining wall block |
Mar. 14, 1989 |
| D299759 |
Interspaced erosion prevention structure |
Feb. 7, 1989 |
| D298655 |
Retaining wall with tie-back elements |
Nov. 22, 1988 |
| D298463 |
Retaining wall block |
Nov. 8, 1988 |
| D297767 |
Block wall |
Sep. 20, 1988 |
| D297574 |
Wall block |
Sep. 6, 1988 |
| D297464 |
Wall block |
Aug. 30, 1988 |
| D295789 |
Concrete block |
May. 17, 1988 |
| 4738059 |
Split masonry block, block wall construction, and method therefor |
Apr. 19, 1988 |
| 4671039 |
Block |
Jun. 9, 1987 |
| 4641470 |
Construction element |
Feb. 10, 1987 |
| 4485604 |
Modular building elements which form when assembled a network of conglomerate or reinforced concrete to form a bearing structure which is also anti-seismic |
Dec. 4, 1984 |
| D276081 |
Building block |
Oct. 23, 1984 |
| D275997 |
Building block |
Oct. 16, 1984 |
| D266875 |
Building block |
Nov. 9, 1982 |
| D266361 |
Building block |
Sep. 28, 1982 |
| D266360 |
Building block |
Sep. 28, 1982 |
| D266362 |
Building block |
Sep. 28, 1982 |
| D266363 |
Building block |
Sep. 28, 1982 |
| D266364 |
Building block |
Sep. 28, 1982 |
| D264998 |
Louvered concrete block |
Jun. 15, 1982 |
| 4228628 |
Building blocks and connector means therefor |
Oct. 21, 1980 |
| D254450 |
Building block |
Mar. 11, 1980 |
| D251307 |
Building construction block |
Mar. 13, 1979 |
| D251306 |
Building construction block |
Mar. 13, 1979 |
| 4071989 |
Sound insulative masonry block |
Feb. 7, 1978 |
| D246994 |
Concrete block |
Jan. 17, 1978 |
| 4041660 |
Self-aligning blocks |
Aug. 16, 1977 |
| 4016693 |
Insulated masonry block |
Apr. 12, 1977 |
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