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Die große Enzyklopädie des mechanischen Rechnens

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Patente aus den USA 1907


 US842232 29.01.1907 C. N. McFarland Adding Machine
 US842763 29.01.1907 H. Burg Cryptographic Machine
 US843944 12.02.1907 R. L. Hibbard Calculating Device
 US844195 12.02.1907 E. McC. Scoville Planimeter
 US844505 19.02.1907 S. H. Drysdale Adding Machine
 US844536 19.02.1907 H. U. Prindle Extensible Rule an Calipers
 US845276 26.02.1907 J. Swart Adding Machine
 US845463 26.02.1907 H. T. Hincks Slide Rule
 US845753 05.03.1907 E. L. Campbell Plotting Instrument
 US847904 19.03.1907 F. K. Caswell Spring Load Computer
 US853543 14.05.1907 D. E. Felt & C. P. Wetmore Tabulating Machine
 US856360 11.06.1907 G. Nahlik Apparatus Ffor Addition
 US858548 02.07.1907 J. G. Vincent Adding Machine
 US859552 09.07.1907 E. S. Ensign Calculating Machine
 US861268 30.07.1907 G. Coradi Planimeter for Measuring the Areas of Leather, Hides, &c
 US861303 30.07.1907 G. H. Morse Calculating Machine
 US861541 30.07.1907 F. Rieck Calculating Stand
 US861861 30.07.1907 J. T. Kelly Ellipsograph
 US864455 27.08.1907 J. Degen Drawing Instrument
 US864770 03.09.1907 J. E. Carroll Computing Machine
 US865808 10.09.1907 B. F. Stump Calculating Machine
 US866298 17.09.1907 W. C. Paris Adding Machine
 US869241 29.10.1907 E. C. Hillyer Game Counter
 US872021 26.11.1907 D. W. Shiek Computing Machine
 US874107 17.12.1907 C. N. McFarland Digit Repeating Mechanism for Adding Machines


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