Number | Name | Date | Kind |
---|---|---|---|
1668984 | Simpson | May 1928 | |
1791291 | Simpson | Feb 1931 | |
1981081 | Simpson | Nov 1934 | |
2047713 | Simpson | Jul 1936 | |
2090252 | Damm | Aug 1937 | |
2114406 | Simpson | Apr 1938 | |
2149368 | Simpson | Mar 1939 | |
3545281 | Johnston | Dec 1968 |
Number | Date | Country |
---|---|---|
0132846 | Feb 1985 | EPX |
1632152 | Jan 1971 | DEX |
Entry |
---|
Exhibit A-2 sheets of photographs of conventional Griffin & Co. apparatus. |
Exhibit B-1 sheet of photographs of conventional Rotex, Inc. apparatus. |