| Patents for Hugo Bilgram |
Patents 1 -
10
of 22
      |
| Picture | Number | Date | Patentee | Title |
 | 133,192 | Nov. 19, 1872 | H. Bilgram | Improvement in steam-engine governors |
 | 158,669 | Jan. 12, 1875 | H. Bilgram | Improvement in cut-off valve-gears |
 | 164,132 | Jun. 08, 1875 | H. Bilgram | Improvement in cut-off-valve gears |
 | 289,607 | Dec. 04, 1883 | H. Bilgram | Metal-planer |
 | 294,844 | Mar. 11, 1884 | H. Bilgram | Bevel-gear cutter |
 | 455,787 | Jul. 14, 1891 | H. Bilgram | Balance-wheel for time-pieces |
 | 506,412 | Oct. 10, 1893 | H. Bilgram | Cigarette-machine |
 | 508,196 | Nov. 07, 1893 | T.A. Willson, H. Bilgram | Machine for grinding the edges of spectacle or eyeglass lenses |
 | 565,851 | Aug. 11, 1896 | H. Bilgram | Cigarette-machine |
 | 572,150 | Dec. 01, 1896 | H. Bilgram | Cigarette-machine |
