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Attachment For Surveying Instruments
Patent for attachment for surveying instruments. Illustrations included.
Date:
September 6, 1904
Creator:
Armstrong, Edward R.
System:
The Portal to Texas History
Wall And Floor Brace
Patent for wall and floor brace. Illustration included.
Date:
September 6, 1904
Creator:
Ettler, John Adolph & Sutherland, John
System:
The Portal to Texas History