• Initial Patents (3 issued in 1934)
• Enhancements to the core patents (8 issued 1942 to 1965)
• Covering the equipment to cut the teeth (10 issued 1934 to 1967)
• Electric Pinking Shears, Briskman did manufacture these (3 issued 1968 to 1971)

Model C pinkers listing these initial three numbers were made from 1934-1942. From 1942 to around 1956 these pinkers also had the 1942 patent number that is listed next.

1,959,190
Method of Making
Pinking Shears
Filed: March 17, 1932
Issued: May 15, 1934

1,965,443
Pinking Shears
[Model A]
Filed: March 17, 1932
Issued: July 3, 1934

1,970,408
Pinking Shears
[Model C]
Filed: Sept. 19, 1931
Issued: Aug. 14, 1934

2,286,874
Method of Making
Pinking Shears
Filed: July 18, 1940
Issued: June 16, 1942

2,564,251
Pinking Shears

Filed: June 9, 1949
Issued: Aug. 14, 1951

2,574,066
Shears for Producing
Zigzag Cuts
Filed: Oct. 20, 1950
Issued: Nov. 6, 1951

2,607,986
Shears With Teeth For
Cutting Along Zigzag Lines
Filed: Aug. 19, 1947
Issued: Aug. 26, 1952

2,850,803
Shears with Arcuate
Profiled Teeth
Filed: Nov. 20, 1957
Issued: Sept. 9, 1958

2,916,822
Left-Handed Pinking
Shears
Filed: March, 31, 1959
Issued: Dec, 15, 1959

2,949,050
Method Of Making
Pinking Or Scalloping Shears
Filed: Dec. 16, 1956
Issued: Aug. 16, 1960

3,170,237
Pinking Shears

Filed: Dec. 3, 1962
Issued: Feb. 23, 1965

1,981,935
Lapping Machine

Filed: March 18, 1932
Issued: Nov. 27, 1934

2,242,097
Pinking Machine

Filed: May 9, 1939
Issued: May 13, 1941

2,289,155
Tool Holder

Filed: Sept. 12, 1940
Issued: July 7, 1942

2,348,529
Pinking Machine

Filed: Nov. 13, 1942
Issued: May 9, 1944

2,353,096
Work Holder

Filed: Sept. 18, 1941
Issued: July 4, 1944

2,537,164
Work Holder For
Pinking Shears
Filed: July 3, 1946
Issued: Jan. 9, 1951

2,592,344
Apparatus for Finishing
Toothed Cutting Blades
Filed: Jan. 30, 1948
Issued: April 8, 1952

3,130,521
Device for Lapping the Cutting
Edges of Pinking Shears
Filed: Aug. 3, 1962
Issued: April 28, 1964

3,257,876
Magnetic Chucking
Device
Filed: Jan. 21, 1965
Issued: June 28, 1966

3,304,596
Workholder for Machining
Pivot Holes in Pinking Shears
Filed: Jan. 21, 1965
Issued: Feb. 21, 1967

3,408,875
Power-Operated Tool

Filed: March 9, 1967
Issued: Nov. 5, 1968

3,536,976
Power-Driven Electronically
Controlled Tool
Filed: March 9, 1967
Issued: Oct. 27, 1970

3,583,067
Universal Power-
Operated Handtool
Filed: July 12, 1968
Issued: June 8, 1971