Dunham v. Dyson
Court of Appeals for the D.C. Circuit
Appeal from Decision of the First Assistant Commissioner of Patents. , Interference proceedings, two of which were between Bert G. Dun-ham and Alfred H. Dyson and John Erickson, one between Bert G. Dunham and John Erickson, and two between Alfred H. Dyson and John Erickson and Bert G. Dunham. From a decision in favor of Erickson in each proceeding, the other parties separately appeal.
1Opinion of the Court
SMYTH, Chief Justice.
We have before us appeals in three interferences numbered respectively 34534, 39810 and 39614. The issues of all are very closely related. We shall, however, consider them separately.
*207We take up first 34534. In this the contest is between Dyson, Erickson, and Dunham. As stated by the First Assistant Commissioner, the invention of this interference relates to automatic telephone systems, and has for its object the reduction of the number of -first selector switches. Prior to the time this invention was made it had been the practice to employ a first selector switch for each…
2Cases cited8 opinions
- Christie v. SeyboldCourt of Appeals for the Sixth Circuit · 1893
- Greenawalt v. DwightCourt of Appeals for the D.C. Circuit · 1919
- Hopkins v. RieggerCourt of Appeals for the D.C. Circuit · 1920
- Kennicott v. CapsCourt of Appeals for the D.C. Circuit · 1920
- Ball v. BarnhurstCourt of Appeals for the D.C. Circuit · 1921
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3Cited by1 opinion
- Valerius v. PfoutsDistrict Court, District of Columbia · 1921