Mold to be used in the manufacture of concrete ceilings
Description
FIG. 1 is a bottom plan view of the inner surface of a mold to be used in the manufacture of concrete ceilings showing my new design;
FIG. 2 is a sectional view taken in the direction of the arrows on line 2--2 of FIG. 1.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
| 1349819 | August 1920 | Davidson |
| 1461409 | July 1923 | White |
| 3632078 | January 1972 | Doshew |
| 4243200 | January 6, 1981 | Beer et al. |
| 0473458 | July 1953 | ITX |
- Sweet's Architectural Catalog file 1978; sec. 3.5 Ce, p. 4, Tapered end form mold.
Patent History
Patent number: D291700
Type: Grant
Filed: Jul 7, 1986
Date of Patent: Sep 1, 1987
Inventor: Moshe Farhi (Haifa)
Primary Examiner: B. J. Bullock
Attorney: John S. Roberts, Jr.
Application Number: 6/882,712
Type: Grant
Filed: Jul 7, 1986
Date of Patent: Sep 1, 1987
Inventor: Moshe Farhi (Haifa)
Primary Examiner: B. J. Bullock
Attorney: John S. Roberts, Jr.
Application Number: 6/882,712
Classifications
Current U.S. Class:
Mold Or Die (D15/136)
