| 摘要 |
1,083,556. Photo-electric monitor unit. STEWART-WARNER CORPORATION. Sept. 29, 1964 [Sept. 30, 1963], No. 39640/64. Heading G1A. The subject matter described is identical to that of Specification 1,083, 555 but the claims relate to the monitor unit described therein, which refer to means used to direct clean air and prevent oil deposition of the source or photocell surfaces. |
