| 摘要 |
1,237,873. Filling and sealing envelopes. BUSINESS AID INVENTIONS Ltd. 28 June, 1968 [7 July, 1967], No. 2804/71. Divided out of 1,237,871. Heading B8C. The description is identical to that of Specification 1,237,871, but the claims are directed to the envelope flap lifting blade mechanism. |
