with an additional counter train operating in the reverse direction

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Patents Grantslast 30 patents

Information Patent Grant
3711016
- Patent number 3,711,016
- Issue date Jan 16, 1973
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
3343789
- Patent number 3,343,789
- Issue date Sep 26, 1967
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
3125291
- Patent number 3,125,291
- Issue date Mar 17, 1964
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2954925
- Patent number 2,954,925
- Issue date Oct 4, 1960
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2935256
- Patent number 2,935,256
- Issue date May 3, 1960
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2851215
- Patent number 2,851,215
- Issue date Sep 9, 1958
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2813679
- Patent number 2,813,679
- Issue date Nov 19, 1957
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2538988
- Patent number 2,538,988
- Issue date Jan 23, 1951
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2314637
- Patent number 2,314,637
- Issue date Mar 23, 1943
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
2269330
- Patent number 2,269,330
- Issue date Jan 6, 1942
- G06 - COMPUTING CALCULATING COUNTING