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Construction block |
| D296365 |
Construction block
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| Patent Drawings: | |
| Inventor: |
Forsberg |
| Date Issued: |
June 21, 1988 |
| Application: |
06/909,097 |
| Filed: |
September 18, 1986 |
| Inventors: |
Forsberg; Paul J. (Richfield, MN)
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| Assignee: |
Keystone Retaining Wall Systems, Inc. (Edina, MN) |
| Primary Examiner: |
Word; A. Hugo |
| Assistant Examiner: |
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| Attorney Or Agent: |
Burd, Bartz & Gutenkauf |
| U.S. Class: |
D25/116 |
| Field Of Search: |
405/284; 405/285; 405/286; 405/33; 404/41; 404/42; 404/34; 52/608; 52/605; D25/113; D25/114; D25/116; D25/58 |
| International Class: |
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| U.S Patent Documents: |
126547; 228052; D237704; 566924; 810748; 1092621; 1456498; 2235646; 2963828; 3036407; 3274742; 3390502; 3430404; 3557505; 3936987; 3995434; 4016693; 4110948; 4207718; 4208805; 4228628; 4229123; 4335549; 4454699; 4524551; 4572699 |
| Foreign Patent Documents: |
392474; 1385207 |
| Other References: |
The Besser Company bulletin, Feb. 1985..
The Hollow Building Tile Assoc. handbook, p. 11, Jan. 1924..
The Besser Company brochure, "Modular Concrete Block", 1984..
The Besser Company brochure, "Paving Stone", Jun. 1984.. |
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| Abstract: |
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| Claim: |
The ornamental design for a construction block, as shown. |
| Description: |
FIG. 1 is a perspective view of the construction block showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a sectional view taken along the line 6--6 of FIG. 3; and
FIG. 7 is a sectional view taken along the line 7--7 of FIG. 2.
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