Higdon, Longan & Higdon

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American patent agent Higdon, Longan & Higdon was recorded as being at address Odd Fellows' Building, St. Louis, Missouri, with registration #493.[1]

Also listed in 1899 were:

The attorneys listed for patent Patent US-1895-532887 are "Higdon and Higdon and Longan", presumably the same bunch.


Patents for which Higdon and Higdon and Longan was the patent agent

References