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Well-Drilling Apparatus.
Patent for drilling well apparatuses that approximate the weight imposed so that the weight can be regulated to improve efficiency, including instructions and illustrations.
Date:
April 28, 1914
Creator:
Hughes, Howard R.
System:
The Portal to Texas History
Cinder-Guard
Patent for cinder guard.
Date:
April 28, 1903
Creator:
Morse, Samuel Finley Breese & Tuggle, Samuel Ritchie
System:
The Portal to Texas History