-
-
-
-
Mechanical counter
-
Patent number 4,255,650
-
Issue date Mar 10, 1981
-
Minnesota Mining and Manufacturing Company
-
Norman L. Giorgini
-
G06 - COMPUTING CALCULATING COUNTING
-
3863052
-
Patent number 3,863,052
-
Issue date Jan 28, 1975
-
G06 - COMPUTING CALCULATING COUNTING
-
3774841
-
Patent number 3,774,841
-
Issue date Nov 27, 1973
-
G06 - COMPUTING CALCULATING COUNTING
-
3756711
-
Patent number 3,756,711
-
Issue date Sep 4, 1973
-
G06 - COMPUTING CALCULATING COUNTING
-
3652011
-
Patent number 3,652,011
-
Issue date Mar 28, 1972
-
G06 - COMPUTING CALCULATING COUNTING
-
3571933
-
Patent number 3,571,933
-
Issue date Mar 23, 1971
-
G06 - COMPUTING CALCULATING COUNTING
-
3456515
-
Patent number 3,456,515
-
Issue date Jul 22, 1969
-
G06 - COMPUTING CALCULATING COUNTING
-
3229908
-
Patent number 3,229,908
-
Issue date Jan 18, 1966
-
G06 - COMPUTING CALCULATING COUNTING
-
2441767
-
Patent number 2,441,767
-
Issue date May 18, 1948
-
G06 - COMPUTING CALCULATING COUNTING
-
1765337
-
Patent number 1,765,337
-
Issue date Jun 17, 1930
-
G06 - COMPUTING CALCULATING COUNTING