Number | Date | Country | Kind |
---|---|---|---|
4-342053 | Dec 1992 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3081936 | Wessling | Mar 1963 | |
3438570 | Bode et al. | Apr 1969 | |
4838772 | LeBlanc | Jun 1989 |
Number | Date | Country |
---|---|---|
2232445 | Dec 1990 | GBX |
1361378 | Dec 1987 | SUX |
Entry |
---|
"High Vaccuum Pumping Equipment", B. D. Power, 1966, pp. 12 and 18. |
Points for Air conditioner for an Automobile, May 20, 1989, see the attached concise Explanation of Relevancy. |