| 摘要 |
1,098,392. Making photographic diaphragms. EASTMAN KODAK CO. Jan. 7, 1965 [Jan. 10, 1964], No. 791/65. Heading B3A. [Also in Division G2] A photographic diaphragm is made from a flat strip of non-magnetic material from which is cut a strip 10 with vanes 13, 14 and tabs 27, 28. The vanes and tabs are bent through 90 degrees to the shown positions and the strip 10 is bent to form a U-shape. |
