| 摘要 |
<p>PURPOSE: To obviate the necessity to look for small change in the case of making a telephone call to a person written on a business card, by a method wherein triangle seals having an insertion port are stuck to four corners of the rear of the business card and a telephone card is fitted. CONSTITUTION: When a telephone call is made to a person written on the business card 1, the telephone card 2 fitted to a rear triangle seal 3 is used. Telephone call to the person written on the business card can be made immediately by making use of the business card with the telephone card. Namely, the business card serves both as a telephone function and propaganda effect.</p> |
