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| Number | Title | Issue Date |
| 4776009 | Telephone handset having housings assembled without mechanical fasteners Assembly of handsets is accomplished without the use of mechanical fastenings. Energy directors are provided at the peripheral edges of one of the two housings forming a handset, and the two housings are united by sonic welding. Severe damage can be cause... | 10/04/1988 |
| 4773091 | Telephone handset for use in noisy locations A telephone handset for use in noisy locations has a noise cancelling electret transmitter which receives a normal acoustic input at the front end and a background noise acoustic input to the rear end. The input to the rear end is via a grill on the back ... | 09/20/1988 |
| 4672666 | Telephone handset for a telephone set A telephone hanset is made with two elongate molded parts, a back part and a front part. The back part is arcuate in side view and is substantially rigid. The front part has a substantially flat central portion which is flexible, with a housing at each en... | 06/09/1987 |
| 4461033 | Transceiver A transceiver having transmitting, receiving, and standby modes of operation includes in a first embodiment, a first push button actuable for selectively establishing the receiving and transmitting modes and a rotatable element positionable to select the ... | 07/17/1984 |
| 4456794 | Fastening arrangement for a handset case halves A fastening arrangement to keep together the parts of a handset consisting of two case halves. The microphone and/or the telephone receiver is kept in position in the case by a clamping element upon pressing the two case halves towards each other. The cla... | 06/26/1984 |
| 4354063 | Telephone handset with illuminated magnifier A telephone handset having a magnifying reading glass lens built into the housing along with an electric light bulb positioned to illuminate the field of view of the lens. The end of the handset housing opposite the cord is elongated to accommodate the le... | 10/12/1982 |
| 4291475 | Labelling device A device for labelling a telephone set or the like. A flexible transparent shield covers a paper label in a receiving area in the handset housing of a telephone set. Lips at the opening of a pair of notches disposed in tangs in the transparent shield wrap... | 09/29/1981 |
| 4220829 | Telephone handset The handset consists of two parts, i.e. of a smooth upper part and of a lower part including the two cap members accommodating the acoustic transducers (receiver and microphone capsules). The top part is connected to the lower part by means of bayonet joi... | 09/02/1980 |
| 4178490 | Tamperproof handset for railroad applications A tamperproof handset for use in a railroad communication system. The handset has a cable provided with plural wires which electrically connect the handset with a communication control. The control is provided with a housing having a front panel. The cabl... | 12/11/1979 |
