...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 7652406 | Apparatus for driving drum of washing machine A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which i... | 01/26/2010 |
| 7443074 | Apparatus for driving drum of washing machine A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which i... | 10/28/2008 |
| 7356906 | Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same A method of manufacturing a radial core type double rotor brushless direct-current motor is provided. A double rotor structure is employed with inner and outer rotors which are doubly disposed such that a stator core is completely divided. A rotational shaft is rota... | 04/15/2008 |
| 6992419 | Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which i... | 01/31/2006 |
| 6678511 | Circuit for correcting pass band flatness A pass band flatness correction circuit for improving flatness of a ripple occurring within a pass band in a band pass filter and a mobile telecommunication repeater system is provided. The pass band flatness correction circuit includes a complementary ba... | 01/13/2004 |
| 6613707 | Dielectric ceramic compositions The present invention discloses a dielectric ceramic composition having a formula represented by (1-x)Nd(Ga1-y Aly)O3 -xCaTiO3, wherein x refers a mole fraction of CaTiO3 to the composition and satisf... | 09/02/2003 |
| 6604276 | Method for fabricating a chip-type varistor having a glass coating layer A ceramic chip-type device having a glass coating film and a fabricating method thereof are provided, in which a coating film having an excellent acid-resistant property is formed on the surface of the ceramic chip device. Thus, the ceramic chip-type devi... | 08/12/2003 |
| 6593263 | Method for preparing dielectric ceramic compositions The present invention discloses a method for preparing Ba(Zn1/3 Ta2/3)O3 dielectric ceramic compositions. In accordance with the present invention, by adding a small amount of Al2 O3, Ga2 O... | 07/15/2003 |