United States Patent and Trademark Office
Allis-Chalmers Roto-Baler Patents
Date Issued Inventor/Assignor Patent No.
12/18/1945 P. H. Harrer 2,391,018 10/29/1946 P. H. Harrer & C. H. Roth 2,410,159 7/29/1947 P. H. Harrer 2,424,821 4/26/1949 C. J. Scranton & P. H. Harrer 2,468,641 5/10/1949 C. J. Scranton 2,469,580 10/27/1953 P. H. Harrer 2,656,786 2/02/1954 P. H. Harrer 2,667,729 3/18/1958 P. H. Harrer 2,826,985 9/09/1958 P. H. Harrer 2,850,964 1/13/1959 P. H. Harrer 2,868,113 10/17/1961 P. H. Harrer 3,004,377 1/16/1962 P. H. Harrer & W. H. Shannon 3,016,675 -------------------------------------------------------
Roto-Baler Accessory Patents (Non AC)
Date Issued Inventor/Assignor Patent No.
6/06/1950 D. G. Liebig & A. Liebig Jr. 2,510,702 3/18/1952 F. J. McAlpine & M. L. McAlpine 2,589,837 10/14/1952 L. E. Bruns & T. M. Bruns 2,613,591 6/30/1953 C. Hansen 2,643,604 12/18/1956 W. W. Martinmaas 2,774,296 3/21/1961 J. V. Strohburg & G. O. Strohburg 2,975,700 3/24/1964 K. Redding 3,125,948 -----------------------------------------------------------
All-Crop Grain Drill
Date Issued Inventor/Assignor Patent No.
8/7/1956 A. G. Buhr 2,757,825 11/5/1957 A. G. Buhr & K. R. Weber 2,812,118 11/26/1957 A. G. Buhr 2,814,421 3/11/1958 K. R. Weber 2,826,344 9/30/1958 A. G. Buhr & K. R. Weber 2,854,172 1/20/1959 A. G. Buhr 2,869,489 -----------------------------------------------------------
Single-Point & Snap-Coupler Hitch Systems
Date Issued Inventor/Assignor Patent No.
9/14/1954 R. S. Reaves 2,688,908 1/31/1956 W. H. Tanke 2,732,784 6/25/1957 W. H. Tanke 2,796,818 12/03/1957 W. H, Tanke 2,814,976 5/13/1958 W. H. Tanke 2,834,277 1/05/1960 M. E. Walberg 2,919,754 8/15/1961 W. E. Voegeli 2,996,126
Austin M. Frederick 