2100 needed inventions

Front Cover
W. Funk, inc., 1946 - Technology & Engineering - 252 pages
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Contents

Fortunes for Inventors
1
The Vast Field of Invention
4
Protecting and Selling Inventions
15
How to Safeguard Your Inventions
21
The Ten Most Needed Inventions
29
General Problems
35
Electrical
88
Chemical
135
Textiles
200
Metals
204
Food
213
Paints and Finishes
218
Air Conditioning and Heating
222
Agriculture
225
Plastics
227
Miscellaneous
231

Aviation and Automotive
157
Machines and Mechanical
170
Radio
186
Instruments
197
Agricultural Equipment
232
Paper
245
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