|
US1253173A
|
|
Running-stitch sewing-machine.
|
|
GB127609A
|
|
Improvements in the Treatment or Purification of Mixtures of Hydrogen and Carbon Monoxide for the Separation therefrom of the latter.
|
|
GB191404292A
|
|
Improvements in and relating to Automatic Recording and Alarm Apparatus for Measuring Instruments.
|
|
GB191400250A
|
|
Improvements in Estimation of Substances in Gases or Liquids.
|
|
GB191216855A
|
|
Improvements in the Production of Nitrogen from Products of Combustion.
|
|
GB191209623A
|
|
Improvements relating to Apparatus for use in the Analysis of Gases.
|
|
GB191209624A
|
|
Improvements relating to Portable Respiratory Apparatus.
|
|
GB191128075A
|
|
Improved System for Preventing or Extinguishing Fires or Explosions in Mines, Buildings, Ships, and the like.
|
|
GB191104177A
|
|
Improvements in Apparatus for Supplying Oxygen for Respiration in Mines and other places.
|
|
GB191017628A
|
|
Improvements in the Manufacture of Oxygen and in Apparatus and Materials therefor.
|
|
GB191017460A
|
|
Improvements in Balloon Envelopes and the like to Prevent Diffusion of Gases.
|
|
GB191016693A
|
|
A New Method of Preparing Oxygen for use in Respirators, Life Saving Apparatus, Recharging Oxygen Cylinders, and for other purposes.
|
|
GB190509779A
|
|
Improvements relating to the Treatment of Various Substances such as Bones, Skins for Obtaining Useful Products therefrom
|
|
CA351297A
|
|
Furnace and engine gas treating apparatus
|
|
CA11471A
|
|
Improvements on the preservation of butter
|
|
CA231936A
|
|
Manufacture of hydrogen nitrogen and carbon dioxide
|
