(Q2105686)

English

Positive Infinitely Variable

1924 patent and trademark

  • PIV

Statements

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US2068784-Figure 1.png
1,180 × 868; 23 KB
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US2068784-Figure 2.png
1,456 × 1,184; 44 KB
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unknown value
Geoffrey Joseph Abott
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Identifiers

 
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