Explains photographic methods of making enlarged or reduced copies of maps and engineering records. (3000 w.) (No. 57685 A)
The camera vs the pantograph
Col Engr
1915
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
PANTOGRAPH HEAD, PANTOGRAPH, AND PANTOGRAPH CONTROL METHOD
European Patent Office | 2022
|Pantograph head driving device, pantograph and charging pantograph
European Patent Office | 2021
|