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| Number | Title | Issue Date |
| 4729251 | Stepping mechanism A stepping mechanism comprises a toothed wheel and a shifting member which shifts toothed wheel by a tooth pitch. The movement plane of the shifting member extends at a right angle to that of the toothed wheel. A two-armed shifting pawl which is supported... | 03/08/1988 |
| 4727763 | Mechanism for transforming a reciprocating rectilinear motion into an intermittent rotary motion A mechanism for transforming a reciprocating rectilinear motion into an intermittent rotary motion comprises a first element having a longitudinal axis and being reciprocable in a direction parallel to said axis, and a second element coaxially surrounding... | 03/01/1988 |
| 4306368 | Visual communications device for use by handicapped persons A communications device including a display panel having a plurality of symbols arrayed thereon in a circle, each of the symbols indicating a particular idea to be communicated, and a pointer projecting radially from the center of the circle. An indexing ... | 12/22/1981 |
| 4270399 | Counter drive mechanism A drive mechanism for converting reciprocating motion into intermittent rotary motion for use in a decimal counter or the like having an integrally molded drive member having two flexibly mounted pawls which are spring biased to insure engagement with the... | 06/02/1981 |
