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| Patents for M. A. Kingsley | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,437,352 | Nov. 28, 1922 | J.W. Parker | Direct or Sight Reading Micrometer | |
 | 1,437,353 | Nov. 28, 1922 | J.W. Parker | Revolution counter | |
 | 1,446,926 | Feb. 27, 1923 | J.W. Parker | Micrometer | |