Resource Type

Attachment For Surveying Instruments (open access)

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 (open access)

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