Inner surface of a 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
Other references
| 1236628 | August 1917 | Tubesing |
| 1349819 | August 1920 | Davidson |
| 1461409 | July 1923 | White |
| 1530851 | March 1925 | Paul |
| 1700609 | January 1929 | Crozier |
| 4243200 | January 6, 1981 | Beer et al. |
- Sweet's Architectural Catalog File; 1978; Sec. 35/Ce; p. 4, Intermediate Form.
Patent History
Patent number: D291701
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: 6/882,713
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: 6/882,713
Classifications
Current U.S. Class:
Mold Or Die (D15/136)
