Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7011519 | Dental unit A dental unit comprises at least one chair, a base, positioned next to the chair and mounting a handpiece tray. The tray is equipped with a plurality of operative or auxiliary handpieces for dental operations of traditional conservative type and/or for implants. At ... | 03/14/2006 |
| 6361316 | Dental instrument support mechanism A dental instrument support mechanism for establishing stable support for dental instruments such as a dental cutting tool, a drill, a fiber scope and the like. The dental instrument support mechanism is formed with a base portion, and a support arm conne... | 03/26/2002 |
| 6152735 | Whip arm mounting for dental delivery system control head This invention is directed to a whip arm mounting (26) of the European style whip arms on the control head (10) of a dental delivery system, where multiple whip arms (26) are automatically centered and returned to the center rest or storage position witho... | 11/28/2000 |
| 5308238 | Dental handpiece holder and treatment assembly by use thereof A dental handpiece holder adapted such that the length of the handpiece holder for holding and accommodating a dental handpiece is shortened in the axial direction, whereby the main unit of the handpiece can be attached to and detached from the joint sect... | 05/03/1994 |
| 5244389 | Dental handpiece holder A dental handpiece holder adapted such that the length of the handpiece holder for holding and accommodating a dental handpiece is shortened in the axial direction, whereby the main unit of the handpiece can be attached to and detached from the joint sect... | 09/14/1993 |
| 5017139 | Mechanical support for hand-held dental/medical instrument A mechanical support for holding a dental medical instrument includes multiple segments which are mounted to one another to provide six degrees of freedom of motion for an instrument supported at one end of the support arm. At each juncture or joint betwe... | 05/21/1991 |
| 4470811 | Device for storing dental handpieces The present invention is directed to a device for storing a dental handpiece, which has a supply hose connected to one end which supply hose hangs freely in a loop-like fashion below the stored handpiece when the handpiece is in a stored position. The dev... | 09/11/1984 |
| 4330281 | Holder for a dental handpiece An improved dental handpiece holder supports a handpiece in the region from the rear end of the grip portion to the tail-stock portion. A front gripping holder portion prevents movement in the horizontal direction, a rear gripping holder portion prevents ... | 05/18/1982 |
| 4208579 | Electrically isolated control means for the illuminating source of a dental drill Apparatus for use in operating a dental drill is disclosed in which the air, water and light for the hand-held drill member are each delivered from an associated supply source, all of which are adapted to be located at a position remote from the working e... | 06/17/1980 |
| 4041608 | Connecting lead supports The present specification discloses and claims a support for a connecting lead. The support comprises a flexible band which runs alongside and parallel to the lead, the band being connected to the lead along the entire length of the band. The band is arcu... | 08/16/1977 |
