Number | Name | Date | Kind |
---|---|---|---|
619439 | Riecke | Feb 1899 | |
849222 | Fleming | Apr 1907 | |
1348872 | Gulich | Aug 1920 | |
3031027 | Mitchell | Apr 1962 |
Entry |
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Wiley Manufacturing Co., Brochure, dated 1973. |
Construction Method and Equipment, dated Sep. 1973, McGraw-Hill Publication. |