...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7210487 | Three dimensional nail stencils and method of use A three dimensional stencil for use in applying raised acrylic designs to nails comprises a generally flat, flexible portion adapted for contact with a portion of a fingernail or toenail, and a cut-out portion formed within the confines of the flexible portion. The ... | 05/01/2007 |
| 5105551 | Buffered inking template A template buffer element with cutouts which are larger than the interior cutouts of a template, attached to the template so that ink deposited on the drawing surface is separated from the working edge of the template by the buffer element, and the cutout... | 04/21/1992 |
| 4710739 | Circuit breaker having shock-proof trip-actuating assembly The trip mechanism of a molded case type circuit breaker is actuated by a plunger that is integral with and axially extends from the end of a reciprocally-movable core member of a solenoid mounted within the breaker housing. The free end of the plunger st... | 12/01/1987 |
| 4697163 | Circuit breaker with impact trip delay A circuit breaker having a trip delay mechanism characterized by a variable magnetic air gap that is adjustable to permit time delay at low level overcurrents to avoid nuisance tripping during motor starting.... | 09/29/1987 |
| 4639700 | Circuit interrupter with shock resistant mechanism A circuit interrupter with shock resistant mechanism characterized by a circuit breaker/contactor device in combination with an electromagnetic actuator which comprises a pair of opposed and facing solenoids having aligned armatures for actuating a linkag... | 01/27/1987 |
| 4436408 | Image forming apparatus including power switch operating means Copying apparatus including a processing unit for forming a visible image on a copy material, a process control device for operatively controlling the processing unit, and a manual power switch unit for supplying power to electric loads of the processing ... | 03/13/1984 |
| 4378541 | Time delay switch In a time delay switch comprising: a delay action means comprising an oil dash pot (9) containing a piston (21) of magnetic-flux-responsive substance disposed in an oil-filled cylinder, a magnetic circuit containing a permanent magnet (18) mechanically linked ... | 03/29/1983 |
| 4315231 | High-speed circuit breaker High-speed breaker for an electric circuit, including a fixed contact, movable contact and a movable holder for the movable contact. An actuating rod is reciprocally movable toward and away from the fixed contact between first and second positions. A head... | 02/09/1982 |
| 4238749 | High inrush current circuit breaker An electromagnetic circuit breaker is provided having a flux producing solenoid and a movable armature attractable to the solenoid upon the occurrence of a predetermined current level and duration. A flux path in the form of members of low reluctance are ... | 12/09/1980 |
| 4237436 | Circuit breaker having a modified armature for time delays at high transient currents An electromagnetic circuit breaker comprising a solenoid coil and an armature actuatable by the coil. A tube of nonmagnetic material within which is a movable magnetizable core, the tube having a pole piece at one end toward which the armature is attracte... | 12/02/1980 |
| 4117285 | Snap action circuit breaker Disclosed is a snap action circuit breaker with a compact one piece steel frame in a two part, telescoping molded circuit breaker case. The compact construction is combined with a symmetrical toggle actuator to provide a pleasing appearance suitable for m... | 09/26/1978 |
| 4062052 | Circuit breaker with improved delay Disclosed is a magnetic circuit breaker having improved delay characteristics and particularly improved pulse tolerance. The trip coil of the breaker is spaced from the magnetic pole piece of a delay tube by a non-conductive, non-magnetic gap and the dela... | 12/06/1977 |
| 3965450 | Electromagnetic device having a movable tube An electromagnetic sensing device comprising a coil and a member magnetically coupled to the coil. An armature is movable relative to said member upon sufficient energization of the coil. A lever is carried by the member and is movable between first and s... | 06/22/1976 |
| 3959755 | Circuit breaker with improved delay Disclosed is a magnetic circuit breaker having improved delay characteristics and particularly improved pulse tolerance. The trip coil of the breaker is spaced from the magnetic pole piece of a delay tube by a non-conductive, non-magnetic gap and the dela... | 05/25/1976 |