Number | Date | Country | Kind |
---|---|---|---|
4105459 | Feb 1991 | DEX | |
91119267.2 | Nov 1991 | EPX |
Number | Name | Date | Kind |
---|---|---|---|
4323095 | Acerbi | Apr 1982 | |
4531449 | Reith | Jul 1985 | |
4732076 | Ewald | Mar 1988 | |
4854221 | Tardy | Aug 1989 | |
4953639 | Hammer et al. | Sep 1990 |
Number | Date | Country |
---|---|---|
2036547 | Jan 1972 | DEX |
3733740 | Oct 1987 | DEX |
Entry |
---|
National Fluid Association, Graphic Symbols For Fluid Power Diagrams Oct. 67, p. 12. |
Pippenger, Fluid-Power Controls, 1959, p. 65. |