"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7112362 | Thermally movable plastic devices and toys In accordance with the invention, thin bodies of plastic, such as sheets or strands, with substantially different thermal coefficients of expansion are laminated together to make plastic bodies which move in response to heat. The movable plastic bodies can be secure... | 09/26/2006 |
| 6927352 | Lateral displacement multiposition microswitch A multiposition microswitch that includes a cavity, a mobile portion made of a deformable material extending above the cavity, at least three conductive tracks extending on the cavity bottom, and a contact pad on the lower surface of the mobile part. The mobile part... | 08/09/2005 |
| 6404128 | Glow discharge starter In a glow discharge starter, a layer of lanthanum is present on one of the conductors and the gas filling is a Penning mixture. The glow discharge starter does not contain radioactive material. The delay time between the application of a voltage between t... | 06/11/2002 |
| 5512799 | Glowbottle starting device for gaseous discharge devices A glowbottle starter switch for igniting gaseous discharge lamps in alternating current circuits. The glowbottle including a hermetically sealed glass envelope (7) containing a fill of an ionizable gas and having at least two lead wires (2,3) disposed the... | 04/30/1996 |
| 5394056 | Opening of capsule inside sealed lamp A capsule containing a precise amount of a substance such as mercury is mounted in an electrode mount assembly on a temperature sensitive member. At elevated temperatures the capsule is moved away from lamp components by the temperature sensitive member t... | 02/28/1995 |
| 5298876 | Bi-metallic switch element A bi-metallic switch element 10 has a contact wire 26 attached thereto by means of a plurality of crimps. A first crimp 28 applied at a first pressure fixes the contact wire to the element and a second crimp 30, formed at a lesser, more controlled pressur... | 03/29/1994 |
| 5001391 | Glow discharge starter A glow discharge starter having an hermetically sealed envelope of vitreous material, a seal located at one end thereof and containing an ionizable medium. A pair of electrical conductors extend through the seal and terminate in a spaced relationship to f... | 03/19/1991 |
| 4978180 | Tri-model type circuit breaker and rapid-start fluorescent lamp containing same A tri-model circuit breaker for use in a rapid-start fluorescent lamp. The circuit breaker includes a glass bulb, first and second electrical leads sealed into and passing through the glass bulb, and a bimetallic element disposed within the bulb and havin... | 12/18/1990 |
| 4882835 | Method of making glow discharge starter This invention relates to a glow discharge starter having an hermetically sealed envelope containing an ionizable medium, a bimetallic electrode and a counter electrode located within the envelope. A silver plating completely covers the nickel-containing ... | 11/28/1989 |
| 4761583 | Glow discharge starter containing radioactive alloy A glow discharge starter having an hermetically sealed envelope of vitreous material, a seal located at one end thereof and containing an ionizable medium. A pair of electrical conductors extend through the seal and terminate in a spaced relationship to f... | 08/02/1988 |
| 4709187 | Lamp with lead wire thermal switch A rapid-start fluorescent lamp has a tubular envelope with a phosphor-coated inner wall, a pair of spaced electrodes and a pair of electrical leads sealed into the ends of the envelope with one electrical lead directly connected to the electrode and the o... | 11/24/1987 |
| 4659966 | Rapid-start fluorescent lamp integrated circuit breaker structure and manufacture A rapid-start fluorescent lamp has a tubular envelope with a phosphor-coated inner wall surface, a pair of spaced electrodes and a pair of electrical leads sealed into each end of the envelope with one electrical lead connected directly to the electrode a... | 04/21/1987 |
| 4647893 | Rapid-start fluorescent lamp having a bimetal circuit breaker with leg portions of unequal length A rapid-start fluorescent lamp includes a circuit breaker having a sealed glass bottle, a pair of electrical conductors sealed therein and passing therethrough and a thermally sensitive bimetal switch within the glass bottle with the bimetal switch having... | 03/03/1987 |
| 4646050 | Glow discharge starter A glow discharge starter having an hermetically sealed, thin-walled envelope of vitreous material, a press seal located at one end thereof and containing an ionizable medium. A pair of non-segmented electrical conductors extend through the press seal and ... | 02/24/1987 |
| 4646049 | Glow discharge starter containing thorium for improving dark starting A glow discharge starter having an hermetically sealed envelope containing an ionizable medium, a bimetallic electrode and a counter electrode located therewithin. A pair of lead-in conductors passes through one end of the envelope for electrically connec... | 02/24/1987 |
| 4572986 | Circuit breaker with thin-walled bulb A rapid-start fluorescent lamp includes a pair of spaced electrodes within an envelope having a fill gas and a phosphor-covered inner wall surface with a circuit breaker having a glass bulb with a wall thickness in the range of about 0.016 to 0.018 inch p... | 02/25/1986 |
| 4562379 | Glow switch starter having metal oxide deposit In a glow switch starter comprising an airtight envelope in which a dischargeable gas is contained, and an electrode assembly hermetically sealed in one end of the envelope and having a stem in which a pair of electrodes are set, one or both of which are ... | 12/31/1985 |
| 4171519 | Circuit breaker with parallel shorting element A circuit breaker has a thermally sensitive bimetal connected across two lead-in wires in a glass envelope. An electrically conductive bypass element is in parallel with the bimetal and shorts it out. The bypass element can be removed from the circuit by ... | 10/16/1979 |
| 4052687 | Circuit breaker with parallel shorting element A circuit breaker has a thermally sensitive bimetal connected across two lead-in wires in a glass envelope. An electrically conductive bypass element is in parallel with the bimetal and shorts it out. The bypass element can be removed from the circuit by ... | 10/04/1977 |
| 4012707 | Fusible element for electrical apparatus Multiple portions exhibiting relatively different heat conductance characteristics, and so arranged that heat is concentrated in the fusible element, are used to control the heat transfer in a fusible element to achieve preselected time-current fusion cha... | 03/15/1977 |