adapted for short-cut multiplication or division

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Patents Grantslast 30 patents

Information Patent Grant
3476313
- Patent number 3,476,313
- Issue date Nov 4, 1969
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
3374946
- Patent number 3,374,946
- Issue date Mar 26, 1968
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
3369744
- Patent number 3,369,744
- Issue date Feb 20, 1968
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2611539
- Patent number 2,611,539
- Issue date Sep 23, 1952
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
1922971
- Patent number 1,922,971
- Issue date Aug 15, 1933
- G06 - COMPUTING CALCULATING COUNTING