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Inventors
ORVILLE
Mary H. Toland
Main Entry
Mary H. Toland
Patent Title
Float Operated Circuit Closer
Family Name
Toland
Given Name
Mary
Middle Name
H.
Patent Date
May 4, 1920
Patent Number
1,339,239
Location
TN
Item sets
INDEX OF BLACK INVENTORS BY STATE OR COUNTRY OF RESIDENCE 1834-2008