In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7504764 | Electric power generating apparatus for movement type equipment and self-generation system having the same Provided are an electric power generating apparatus for a movement type equipment and a self-generation system having the same. The electric power generating apparatus for a movement type equipment includes: a piezoelectric beam having an end fixed to a movement typ... | 03/17/2009 |
| 7461554 | Digital time variable gain circuit for non-destructive test instrument In a non-destructive test instrument, there is provided a time variable gain (TVG) amplifier wherein the gain of the amplifier is dynamically changed to optimize the amplitude of a flaw echo signal. The TVG digital memory for a given TVG curve specifies and controls... | 12/09/2008 |
| 7162900 | Tubular lock and master key A master key includes a key base having a key handle, a fixing seat and a sleeve, all of which are connected to each other integrally. The fixing seat has a plurality of angularly spaced apart spring holes having respective key springs. A key tube includes a large c... | 01/16/2007 |
| 7097013 | Hydrodynamic brake The present invention relates to a hydrodynamic brake which comprises a stator, a rotor, a toroidal space defined by the stator and the rotor, a medium which is intended to be supplied to the toroidal space when the brake is activated, and a multiplicity of componen... | 08/29/2006 |
| 7046156 | Alarm system for a motor vehicle Alarm system for motor vehicle, incorporating an alarm control unit which is powered by a main battery of the motor vehicle, a siren unit likewise powered by the main battery, and a back-up battery in the siren unit which is arranged to power the siren unit upon fai... | 05/16/2006 |
| 6812666 | Current sense IC with circuitry for eliminating ripple current error from motor current measurement A circuit for recovering a current sense signal which is offset by a common mode displacement, such is the case when the signal is the voltage across a current sense resistor located on the high side bus or between the switches of a motor controller circuit. The cir... | 11/02/2004 |
| 6727095 | Nucleotide sequences encoding sugarbeet glutamine synthetase and methods for reducing glutamine metabolism in sugarbeet The present invention relates to agents and methods for modifying the glutamine metabolism in plants, especially in sugar beet. ... | 04/27/2004 |
| 6664295 | Fungicidal phenylamidine derivatives The invention provides fungicidal compounds of formula I and salts thereof: ##STR1## wherein the various radicals and substituents are as defined in the description, fungicidal compositions containing them and method for combating fungi which comprises... | 12/16/2003 |
| 6400341 | Head-mounted picture display device A head-mounted picture display device which includes a picture display system and front and back covers. The picture display system includes LCDs for displaying pictures and prisms for introducing the pictures to the observer's eyes. The front and back co... | 06/04/2002 |
| 5736911 | Piezoelectric resonator with a resonance frequency adjusting notch In a piezoelectric resonator 11 in which resonance electrodes 13 and 14 are formed on both major surfaces of a rectangular plane piezoelectric plate 12 and which utilizes stretching vibration along the short side of the piezoelectric plate 12, notches 15 ... | 04/07/1998 |
| 5681520 | Method of molding large containers by the process of stretch blow molding There is provided a method of molding a large container including the steps of preparing a preform from an injection-molded, thick-wall, closed-end parison by repeatedly and intermittently applying an air blow pressure to the parison and releasing the air... | 10/28/1997 |
| 5557860 | Dryer section with moistening devices at latter ends A drying section includes a plurality of single-tier dryer groups, optionally followed by one or more double-tier groups. To control curl in the final paper product, a moistening device extending over the width of the drying section is provided near the e... | 09/24/1996 |