Box 1
Container
Contains 12 Results:
Patent Materials for Methods and Means for Measuring and Recording Interval Demand for Apparent Power, 1923
File — Box: 1, Folder: 9
COLLECTION DESCRIPTION
From the Collection:
Patents, articles and clippings concerning electrical engineering; thesis for graduate degree in electrical engineering, University of Illinois, 1912; manuscript of book THE POWER-FACTOR (not published). Also, bibliography, clippings and correspondence relating to DuBois' work as an ornithologist, especially his photography. Includes correspondence with Arthur A. Allen. Also, a catalog of glass negatives and photo albums organized by bird species as well as other black and white photographs...
Dates:
1923
Patent Materials for Torque Equalizing Systems, 1928
File — Box: 1, Folder: 10
COLLECTION DESCRIPTION
From the Collection:
Patents, articles and clippings concerning electrical engineering; thesis for graduate degree in electrical engineering, University of Illinois, 1912; manuscript of book THE POWER-FACTOR (not published). Also, bibliography, clippings and correspondence relating to DuBois' work as an ornithologist, especially his photography. Includes correspondence with Arthur A. Allen. Also, a catalog of glass negatives and photo albums organized by bird species as well as other black and white photographs...
Dates:
1928