| Number | Name | Date | Kind |
|---|---|---|---|
| 2285229 | Roberts et al. | Jun 1942 | |
| 2712907 | Hayden et al. | Jul 1955 | |
| 2771251 | Silverstein | Nov 1956 | |
| 3524373 | Helmus et al. | Aug 1970 | |
| 3722822 | Wallace | Mar 1973 | |
| 4438889 | Schonmeier | Mar 1984 | |
| 4500044 | Schnell | Feb 1985 | |
| 4988056 | Shin | Jan 1991 |
| Entry |
|---|
| Installation and Operation Manual 57600-902-01 for Durant Ambassador Series Count Control by Eaton Corporation, Watertown, Wisconsin, 28 pages, undated. Two mounted photographs of cloth winder of Measuregraph Company of St. Louis, Mo. |
| Data Sheet, 1 page, undated, for Series 700, ACCU-CODER brand shaft encoder by Encoder Products Company of Idaho. |
| Boston Gear 1990 catalog, pp. 24 and 83. |
| Boston Gear 1985 catalog, p. F133. |