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Showing 1 to 20 of 25271 results

PATENT /PUB No. Country Patent Title Patent Owner Filing Date Issue/Pub Date Status
4242559 US Method and apparatus for the electro-erosive machining of workpieces with automatic threading of the electrode Dec 11, 1978 Dec 30, 1980 Expired
4345142 US Directly heatable semiconductor tubular bodies Oct 11, 1978 Aug 17, 1982 Expired
5338393 US Depositing layer contained in vapor phase with carrier gas on substrate after insulating material has been removed Mar 17, 1992 Aug 16, 1994 Expired
4221942 US Apparatus and method for quenching an arc in a gas flow circuit Dec 13, 1977 Sep 9, 1980 Expired
5936823 US Circuit arrangement for protecting a subscriber circuit of a telecommunication switching system Dec 19, 1996 Aug 10, 1999 Expired
4751013 US CERAMIC POWDER-POLYMER MIXTURE IS FIRED TO BURN-OFF POLYMER AND GIVE VOIDS Jul 26, 1985 Jun 14, 1988 Expired
5983143 US Control unit with dynamically managed timers Nov 17, 1997 Nov 9, 1999 Expired
4810831 US Housing for an electrical component, and method for sealing same Sep 22, 1987 Mar 7, 1989 Expired
4745369 US Circuit arrangement for protection against thermal overload of traveling wave tube amplifiers having multicollector traveling wave tubes Nov 17, 1986 May 17, 1988 Expired
5790996 US Examination table for supporting and positioning a patient in a medical examination apparatus Sep 25, 1997 Aug 11, 1998 In Force
4271464 US Switching arrangement for the input of interrupt commands and the output of interrupt acknowledgment for computer systems Sep 29, 1978 Jun 2, 1981 Expired
4688071 US Circuit arrangement comprising a phototransistor Oct 22, 1984 Aug 18, 1987 Expired
4032717 US CIRCUIT ARRANGEMENT FOR A CONTINUOUS ADJUSTMENT OF THE BASE WIDTH IN A STEREO DECODER Feb 26, 1976 Jun 28, 1977 Granted
4855801 US Transistor varactor for dynamics semiconductor storage means Jul 16, 1987 Aug 8, 1989 Expired
4655098 US Drive mechanism for a circuit breaker using eccentric member and directional lock Sep 3, 1985 Apr 7, 1987 Expired
5155754 US HIGH FREQUENCY SUPPLY FOR AN X-RAY TUBE Oct 3, 1991 Oct 13, 1992 Expired
4821256 US Method for monitoring information transmission in connected through four-wire connecting paths, more particularly semipermanently connected through connecting paths in digital time multiplex exchanges Jun 25, 1987 Apr 11, 1989 Expired
5742601 US ATM communications equipment Jun 4, 1996 Apr 21, 1998 Expired
5729174 US Circuit arrangement for transmitting audio signals Jun 27, 1996 Mar 17, 1998 Expired
4628517 US Digital radio system Sep 23, 1985 Dec 9, 1986 Expired

Showing 1 to 20 of 25271 results

*Note: Documents with disabled checkboxes are ancillary ones, so these cannot be added to portfolio.