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  • Year: 1940  
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Published

Federal Telegraph Company, Newark, NJ (7)
Bausch & Lomb Optical Co., Rochester, NY (4)
Henry Hughes and Son Limited, London (3)
Cambridge, MA (2)
RCA Manufacturing Co. Inc., Harrison, NJ (2)
United States Department of Agriculture, Washington, DC (2)
Agfa Ansco, Binghamton, NY (1)
Allen B. Du Mont Laboratories, Inc., Passaic, NJ (1)
C. L. Berger and Sons, Boston (1)
Chapman & Hall Ltd, London (1)
D. Appleton-Century Company, Incorporated, New York (1)
Gregory, Bottley & Co., London (1)
Harvard University, Cambridge MA (1)
Hjorth Lathe & Tool Co., Woburn, MA (1)
John F. Rider Publisher, Inc., New York (1)
Massachusetts Institute of Technology, Cambridge, MA (1)
Meissner Manufacturing Company, Mt. Carmel, IL (1)
New York University Press, New York (1)
Radio Corporation of America Manufacturing Co, Inc, Harrison, NJ (1)
Spencer Lens Company, Buffalo, NY (1)
The Cincinnati Milling Machine Co., Cinicnnati, OH (1)
U. S. Naval Institute, Annapolis, MD (1)
United States Patent and Trademark Office (1)

Year *

1940 (41)

Thesaurus

tubes (8)
C6-A3 (6)
Microscopes (4)
Optical Instruments (3)
Acoustics (3)
Bausch & Lomb Optical Company (3)
scientific instruments -- surveying (3)
RCA (3)
C3-D4 (3)
C5-E1 (3)
Frequency-Response Curve of Violins (2)
C4-A2 (2)
C4-C2 (2)
C5-C2 (2)
C5-H1 (2)
C6-A2 (2)
Tools (1)
Navigation (1)
Electricity (1)
Chemistry (1)
Physics (1)
Manufacturing (1)
Technology (1)
History of Science (1)
Harvard Science Aco (1)
Electrical Engineering (1)
Bausch and Lomb (1)
Patents (1)
Time (1)
Spencer Lens Company (1)
C. L. Berger (1)
Engineering Instruments (1)
Surveying Instruments (1)
Vacuum Tubes (1)
Radio (1)
Meters (1)
Reflecting Quadrant (1)
Thomas Godfrey (1)
photography -- equipment (1)
photography -- aerial (1)
codes (1)
weather -- reports, transmission of (1)
maps -- photography (1)
physics -- time (1)
geology -- minerals (1)
milling (1)
recieving tubes (1)
recieving tube (1)
Phonograph Pick-up Design (1)
H.U. Tercentenary (1)

My Object Lists

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HUSUN REVIEW: Now Huges Echo Sounders in U.S.A.

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HUSUN Soudning Machine Mark I

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International Code for Radio Weather Reports from Ships

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"Lumex" Morse Key & "HUSUN" Lamp Signalling Apparatus

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Men and Machines in Early Harvard Science [article]

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The Meter At Work

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The Microscope

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Du Mont Cathode-Ray Oscillograph, Type 208, Operating Instructions

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Notes on Principles of Electrical Engineering

Operating Instructions V-20 Series Variac

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Operator's Instruction Book: Cincinnati Nos. 2, 3 and 4: Dial Type Milling Machines (Model ER)

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Precision Instruments for Surveying and Engineering: General Catalog, Edition F

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