Ruth v. Groch
Court of Appeals for the D.C. Circuit
Appeal from the Commissioner of Patents. Two separate interference proceedings between Joseph P. Ruth, Jr., and Frank Groch, were submitted togéther. From a decision awarding priority in each proceeding to Groch, Ruth appeals.
1Opinion of the Court
SMYTH, Chief Justice.
These are interference proceedings which were submitted together and will be disposed of in one opinion. The first relates to flotation apparatus for concentrating ores, wherein the metallic values are caused to be separated and independently removed from the gangue way by the selective action of froth-producing agencies, and the second, to a gas-diffusing device for flotation apparatus. By stipulation the same testimony has been used in both cases.
The first interference is expressed in four counts, and the second in five. In each case the three tribunals of the Patent…
2Cases cited4 opinions
- Ball v. BarnhurstCourt of Appeals for the D.C. Circuit · 1921
- Maremont v. OlsonDistrict Court, District of Columbia · 1920
- Massey v. RidgeCourt of Appeals for the D.C. Circuit · 1921
- Kitselman v. ReidCourt of Appeals for the D.C. Circuit · 1920
3Cited by5 opinions
- Bijur v. KenningtonCourt of Appeals for the D.C. Circuit · 1922
- Oldroyd v. MorganCourt of Appeals for the D.C. Circuit · 1928
- Stern v. SchroederCourt of Customs and Patent Appeals · 1929
- Dowell v. DomanCourt of Appeals for the D.C. Circuit · 1922
- Stern v. SchroederCourt of Customs and Patent Appeals · 1929