Patent Archive

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

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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
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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

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