Lantern slides and films relating to an application by E. & L. Dreyer to revoke patent 91258, 'Improvements in or relating to devices for spreading granular or powdery material'.

Made:
1875-1944
part of archive:
Papers of patent agent and engineer Sir Dugald Clerk, relating to gas engines and patent investigations
maker:
Marks & Clerk

Details

Extent:
c. 100 slides and 3 reals of film
Identifier:
MAC/3

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