In re Wahlforss

This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming that of the examiner rejecting a claim numbered 13, embraced in an application for the reissue of patent No. 2,069,790 granted appellants, as joint inventors, for a lubricant. The patent bears date of February 9,1937.

The claim at issue was copied in the reissue application from a patent No. 2,121,824, issued to Carl F. Prutton June 28,1938, an interference with that patent being sought.

*868The claim reads:

13. A lubricating composition containing as a principal lubricating constituent a major…