States
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
Improvement in Construction of Jails.
Patent for improvement in construction of jails; in which a system of flues in between layers of a double floor provide ventilation through grates in the walls and upper layer of the floor, without compromising security.
Date:
October 19, 1875
Creator:
Seeber, John A. & Croxton, James C.
System:
The Portal to Texas History
Improvement in Carburaters
Patent of an improvement for a carbureter that furnishes the apparatus for enriching the vapors of gasoline or other light hydrocarbon.
Date:
October 19, 1875
Creator:
Pollard, James M.
System:
The Portal to Texas History