Texas Patents - 4 Matching Results

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Coin-Controlled Vending-Machine
Patent for a coin-operated vending machine. Illustrations included.
Coin-Controlled Vending-Machine
Patent for a pencil vending machine that is coin-operated, with illustrations.
Spring-Washer for Piano-Flanges.
Patent for a spring washer for piano flanges that prevents the flanges from becoming loose over time.
Bookbinding
This is a letter patent for the bookbinding invention as a means for holding books, pamphlets, catalogs, and other similar paper materials together. The purpose of this invention is to make it possible to place additional material inside the same covers, and with the original contents of a book without breaking or tearing the binding.
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