| 摘要 |
1,038,922. Gratings; frame joints. E. C. HALLOCK. March 3, 1965 [Sept. 16, 1964], No. 42016/65. Divided out of 1,038,921. Headings E1G and E1K. The subject matter is identical with that of Specification 1,038,921 but the claims are directed towards the grating frame. |
