SENSOR DEVICE FOR TELEPHONE DEVICES TO PREVENT THE USE OF FAKE TELEPHONE CARDS

Date of notification, start of protection period:

Nov. 01. 1996.

Registration number:

1 106

Owner and inventor of design protection:

Szarvas Tibor, Jánoshalma (HU)

Date of document issuance:

Budapest, Juni 05. 1997.

Awards, recognitions:
________

The technical problem to be solved and solved:

The two registration numbers (1106 and 1199) are closely related. It was possible to solve full-scale industrial protection in two forms of protection. Both titles reveal the objective.

Further fate of the invention:

The turnover of public, street telephone booths showed a strong downward trend due to the turnover of mobile phones (450 MHz), which were already starting at that time. Therefore, MATÁV, which was a monopoly at the time, did not invest in new developments for public telephone exchanges. As time has proven, MATÁV made the right decision. Mobile phones became the future, which is now the present.