23 TYPEWRITERS, OFFICE MACHINES-NAMELY, ERASING MACHINES, BOOK BINDING MACHINES, MACHINES FOR SEALING ENVELOPES, MACHINES FOR ADDRESSING ENVELOPES, MACHINES FOR OPENING ENVELOPES, CHECK WRITERS, AND PARTS AND ACCESSORIES THEREFOR, STAPLING MACHINES FOR APPLYING STAPLES OR CLIPS TO PAPER OR LIKE SHEET MATERIAL, PERFORATING MACHINES FOR PUNCHING HOLES IN PAPER OR LIKE SHEET MATERIAL, CUTTING AND SHEARING MACHINES FOR CUTTING AND TRIMMING PAPER OR LIKE SHEET MATERIAL