Catenary arch building toy
Description
FIG. 1 is a front elevational view of a catenary arch building toy showing my new design, the side opposite being substantially mirror image;
FIG. 2 is a right side elevational view thereof, the side opposite being a mirror image;
FIG. 3 is a top plan view thereof; and
FIG. 4 is a bottom plan view thereof.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
604708 | May 1898 | Burton |
1568252 | January 1926 | Strub |
1878373 | September 1932 | Breeser |
464185 | March 1914 | FRX |
Patent History
Patent number: D304464
Type: Grant
Filed: Jul 10, 1987
Date of Patent: Nov 7, 1989
Inventor: Donald L. Andrews (Sanibel, FL)
Primary Examiner: Charles A. Radmaker
Attorney: Merrill N. Johnson
Application Number: 7/71,721
Type: Grant
Filed: Jul 10, 1987
Date of Patent: Nov 7, 1989
Inventor: Donald L. Andrews (Sanibel, FL)
Primary Examiner: Charles A. Radmaker
Attorney: Merrill N. Johnson
Application Number: 7/71,721
Classifications
Current U.S. Class:
D21/59;
D21/108;
D21/114