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Mary Hallock-Greenewalt: The Complete Patents by Mary Hallock-Greenewalt (Paperback, 2005)

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Title: Mary Hallock-Greenewalt. Author: Mary Hallock-Greenewalt. Format: Paperback. Release Year: 2005. Type: History & Criticism. Item Weight: 271g. Item Width: 7mm. Item Length: 189mm.

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Mary Hallock-Greenewalt played the piano with the Philadelphia and Pittsburgh Orchestras as a concert soloist, invented her own color organ that she called a Sarabet after her mother, and, in her pursuit of the art she named Nourathar by combining the Arabic words for essence of light, she had to invent the machinery required as well. Numbered among her inventions are the rheostat that allos the gradual fading of light, the mercury switch, and was among the earliest developers of colored gel filters for tinting theatrical lights. Her patent for the rheostat became the subject of an infirngement lawsuit in the lat 1920s against such large corporations as General Electric, a lawsuit that she ultimately won in 1936. This volume collects all eleven of her technology patents, revealing the refinement and evolution of the Sarabet. These patents also enable a clear evaluation of her contributions to visual music, since, as Dr. Betancourt notes in his introduction, the patents allow a much clearer determination of her place in history and a peer-reviewed statement of her accomplishments.

Product Identifiers

Publisher
Wildside Press
ISBN-13
9780809511914
eBay Product ID (ePID)
107094661

Product Key Features

Book Title
Mary Hallock-Greenewalt: the Complete Patents
Author
Mary Hallock-Greenewalt
Format
Paperback
Language
English
Publication Year
2005
Number of Pages
144 Pages

Dimensions

Item Height
246mm
Item Width
189mm
Item Weight
271g

Additional Product Features

Title_Author
Mary Hallock-Greenewalt
Country/Region of Manufacture
United States
Editor
Michael Betancourt

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Picture 1 of 1

Mary Hallock-Greenewalt: The Complete Patents by Mary Hallock-Greenewalt (Paperback, 2005)

About this product

Product Information

Product Identifiers

Product Key Features

Dimensions

Additional Product Features

Best Selling in Books

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