Category:1870s patents

Subcategories

This category has the following 3 subcategories, out of 3 total.

Media in category "1870s patents"

The following 8 files are in this category, out of 8 total.

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  18700906 Game board (bowling) - U.S. patent 107,030.png 910 × 963; 165 KB
  
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  1878-04-25 MAE A-C-KREBS=Brevet-FR124.078 Générateur de vapeur à circulation directe dit générateur RENHAYE Renard+Krebs+Delahaye MAE.pdf 1,239 × 1,750, 9 pages; 896 KB
  
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  1878-04-25 MAE A-C-KREBS=Brevet-FR124.078 Générateur de vapeur à circulation directe dit générateur RENHAYE Renard+Krebs+Delahaye.pdf 1,239 × 1,752, 9 pages; 1.06 MB
  
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  Autographic telegraph instrument.jpg 1,820 × 2,690; 363 KB
  
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  Specification of James Newton - consuming smoke and economizing fuel (IA b30756443).pdf 1,539 × 2,522, 14 pages; 953 KB
  
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  Eleazer Bles' Improvement in Swedges for Making Cutters for Nail Machines - DPLA - 2b5741bfb095ab319bde231e6f2200fb (page 1).jpg 4,755 × 3,304; 1.64 MB
  
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  Frizell trompe patent US199819.png 1,799 × 3,284; 156 KB
  
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  Kettenmaschine Patent 1872.tif 4,440 × 6,262; 11.14 MB