| Patents for Hugo Bilgram |
Patents 1 -
15
of 22
      |
| Number | Date | Patentee | Title | Type |
| 133,192 | Nov. 19, 1872 | H. Bilgram | Improvement in steam-engine governors | steam engine governors |
| 158,669 | Jan. 12, 1875 | H. Bilgram | Improvement in cut-off valve-gears | steam engine valve gear |
| 164,132 | Jun. 08, 1875 | H. Bilgram | Improvement in cut-off-valve gears | steam engine valve gear |
| 289,607 | Dec. 04, 1883 | H. Bilgram | Metal-planer | metal planers |
| 294,844 | Mar. 11, 1884 | H. Bilgram | Bevel-gear cutter | gear making machines |
| 455,787 | Jul. 14, 1891 | H. Bilgram | Balance-wheel for time-pieces | clockmaker |
| 506,412 | Oct. 10, 1893 | H. Bilgram | Cigarette-machine | tobacco machinery |
| 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 | tobacco machinery |
| 572,150 | Dec. 01, 1896 | H. Bilgram | Cigarette-machine | tobacco machinery |
| 634,102 | Oct. 03, 1899 | H. Bilgram | Paper-bag machine | packing and packaging machines |
| 655,668 | Aug. 07, 1900 | O.L. Schehl, H. Bilgram | Mechanism for feeding sheets of paper, &c. | |
| 656,340 | Aug. 21, 1900 | H. Bilgram | Bag-machine | packing and packaging machines |
| 665,054 | Jan. 01, 1901 | H. Bilgram | Gear-cutting machine | gear making machines |
| 749,606 | Jan. 12, 1904 | H. Bilgram | Gear-cutting machine | gear making machines |
