Cover Image

Patents for inventions /

by J. Ewart Walker ... and R. Bruce Foster.
Main Creator: Walker, John Ewart.
Contributors: Foster, Robert Bruce, 1882-
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Format: BOOK
Language:English
Published / Created: London ; New York : Sir I. Pitman & Sons, Ltd., 1922.
Subjects:
Notes:Physical description: xiii, 377 p. ; 22 cm.
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