Patents for inventions; abridgments intended to serve as guides to specifications. (period 1921-1925)
Toys. abridgments of specifications, class 132 (iii)
Toys. Abridgments Specifications
1929
129 pages
Book
English
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Wood, Working (including sawing), Abridgments of Specifications, class 145 (ii), period 1921-25
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