US94095AUS94095DAUS94095AUS 94095 AUS94095 AUS 94095AUS 94095D AUS94095D AUS 94095DAUS 94095 AUS94095 AUS 94095A
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US
United States
Prior art keywords
machines
improvement
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Publication date
Application grantedgrantedCritical
Publication of US94095ApublicationCriticalpatent/US94095A/en