| 摘要 |
<p>962,176. Forming bags; seaming non- metallic sheet material. BARTELT ENGINEERING CO. Inc. March 29, 1962 [April 10, 1961], No. 12120/62. Drawings to Specification. Headings B5D and B5K. [Also in Division B8] The description is identical with that of Specification 962,177. The claims are directed to the heat-sealing mechanism.</p> |
