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Air-engines

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1.
Digest of United States patents of air, caloric, gas, and oil engines
Author
Allen, James Titus
Published
Washington, D.C., The Columbia planograph company, c1906.
Online
v.1
v.2
v.5
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
2.
Digest of United States patents of air, caloric, gas, and oil engines, 1789-1905, chronologically arranged under two hundred and five subdivisions ..
Author
Allen, James T. (James Titus)
Published
Washington, D. C., The Columbia planograph company, c1906.
Online
c.1 v.1 plates
c.1 v.5 index
v.1
v.2
v.3
v.4
v.5
v.5
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
3.
Patents for inventions : abridgments of specifications
Author
Great Britain. Patent Office
Published
London : Patent Office, 18---
Online
1897/1900
Location
HathiTrust Digital Library >> Online Resource
Format
Journals & Newspapers / Online