Copy of receipt given to the U.S. Patent Office for models, 1872 March 22.

ArchivalResource

Agricultural College of Pennsylvania. Copy of receipt given to the U.S. Patent Office for models, 1872 March 22.

Copy of receipt given to the U.S. Patent Office for models, 1872 March 22.

http://www.worldcat.org/oclc/32075600

The receipt contains a list of models the college borrowed, possibly to be used for testing, in the areas of agriculture, agricultural products, calorifices, carriages, civil engineering, clay manufactures, grinding mills, household furniture, hydraulics and pneumatics, leather manufactures, mechanical engineering, metal working, presses, steam and air engines, stone working, and wood working. The list includes the patentee, date (1842-1869) of patent, item patented, and class of patent.

1 item (17 p.)

Pennsylvania State University Libraries