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Description archivistique
McCowan, David A. Avec documents numériques
Aperçu avant impression Affichage :

Photographing Machine, Patent #289763: Drawings

Item includes a 6 page document with technical drawings that included the 1929 patent application that David A. McCowan made for the "Photographing Machine" (Phototeria).

McCowan, David A.

Photographing Machine, Patent #289763: Claims

Item is a document outlining the patent claims being made by David A. McCowan for the photographing machine (Phototeria) as part of the patent process undertaken in 1929.

McCowan, David A.