Round chessboard or checkerboard
Description
The FIGURE is a plan view of a round chessboard or checkerboard, showing my new design.
The board is of conventional thickness.
Referenced Cited
U.S. Patent Documents
| D224837 | September 1972 | La Goy |
| D233055 | October 1974 | Keller |
Patent History
Patent number: D251862
Type: Grant
Filed: Jan 13, 1977
Date of Patent: May 15, 1979
Inventor: Norman Betros, Jr. (Cold Spring, NY)
Primary Examiner: Melvin B. Feifer
Application Number: 5/759,023
Type: Grant
Filed: Jan 13, 1977
Date of Patent: May 15, 1979
Inventor: Norman Betros, Jr. (Cold Spring, NY)
Primary Examiner: Melvin B. Feifer
Application Number: 5/759,023
Classifications
Current U.S. Class:
D21/24
International Classification: D2101;
International Classification: D2101;
