Application of Edward C. Filstrup, Jr

O’CONNELL, Judge.

This is an appeal from the decision of the Board of. Appeals of the United States Patent Office affirming the final rejeetion by the Primary Examiner of claims 22 to 25 inclusive, 41, 42, 43 and -45 of appellant’s application Ño. 256,-877 for a patent on a'blasting device, The following references are of record:

Vick 174,035 Feb. 22, 1876

Woodruff 1,835,921 Dec. 8, 1931

Corley 2,006,791 July 2, 1935

Hayward 2,083,709 June 15, 1937

Christensen 2,180,795 Nov. 21, 1939

Berry 2,314,683 Mar. 24, 1943

Loving, Jr. 2,636,437 Apr. 28, 1953

Swed 2,648,282 Aug. 11, 1953

Swiss Patent 177,010 Aug.…