Patent drawing - for H. A. Whiting and W. J. Winghart's Umbrella and Cane Combined Public domain image
Резюме
Utility Patent Drawings
Public domain photograph of architecture design drawing, free to use, no copyright restrictions image - Picryl description
Известные патентные рисунки из Национального архива Вашингтона.
Теги
Дата
29/08/1882
Источник
The U.S. National Archives
Информация о правах
No known copyright restrictions