3 Matching Results

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Oxygen-Generator (open access)

Oxygen-Generator

Patent for an oxygen generator that refills as it is emptied.
Date: February 7, 1911
Creator: Bradley, Richard Clinton
Object Type: Patent
System: The Portal to Texas History
[Pamphlet Describing Kempner Addresses Economics Society] (open access)

[Pamphlet Describing Kempner Addresses Economics Society]

Pamphlet describing Kempner addresses Economics Society about commission form of government. Also, it documents an article on "Commission Government: Would It Suit New Orleans by Edward H. Burns?"
Date: 1911-03-13~
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
Rail-Bond. (open access)

Rail-Bond.

Patent for a rail bond that allows an electric current to travel through the rails.
Date: March 14, 1911
Creator: Humason, Granville A. & Odell, Edward F.
Object Type: Patent
System: The Portal to Texas History