Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 5247846 | Quick disconnectable screw device A quick-disconnectable device with a screw piece, a first threaded part and a second threaded part, the threaded of which fits with the first threaded part, wherein the screw piece has a straight guide for the first threaded part, and the screw piece has ... | 09/28/1993 |
| 5086564 | Device and method for active vibration damping A device and method for active vibration damping of an object which comprises a beam with two free ends comprises a vibration sensor, a control circuit, and an actuator. The sensor is located near the first end of the beam and the actuator is located near... | 02/11/1992 |
| 5068209 | Optical fluorophosphate glass with anomalous positive incremental dispersion and process for making it An optical fluorophosphate glass with an anomalous positive incremental dispersion +Ɗ.nu.e between 11.8 and 12.5, a refractive index ne between 1.53 and 1.55 and an Abbe coefficient .nu.e between 72.8 and 73.5 has the fol... | 11/26/1991 |
| 5065657 | Automatic locking mechanism for the drive device of a microtome A microtome with a drive device is described, which has a shaft and a handwheel, arranged thereupon, with a grip. For locking the drive device, an electromagnet is firmly arranged on the housing frame of the microtome. The latter is in effective connectio... | 11/19/1991 |
| 5022723 | Panoramic periscope for two spectrum ranges The panoramic periscope has a panoramic head and a tube. In the panoramic head is mounted a viewing mirror movable in elevation and azimuth, upstream of which is arranged an at least bispectral front window. Various measuring or observation devices, for e... | 06/11/1991 |
| 5022744 | Microscope with a camera and automatic color temperature balance A microscope is disclosed having an illumination device that includes a color temperature regulating device and a color temperature measurement device. The color temperature regulating device includes a light guide and two conversion filters that are disp... | 06/11/1991 |
| 5001479 | Gray code converter with error signal A method and circuit arrangement is disclosed for converting Gray code signals into counting pulses, forming a counter status, detecting interference signals infringing the Gray code and for forming an error signal with a network defining a finite automat... | 03/19/1991 |
| 4983997 | Microphotographic apparatus with automatic film format reflection The invention relates to a microphotographic apparatus which superimposes one set of film format markings on an image recorded by a film type held by a camera attachment. Specifically, the apparatus has two opaque carriers with multiple sets of transparen... | 01/08/1991 |
| 4975565 | Automatic adjusting device for a sighting system The automatic adjusting device for a sighting system of a device which can be directed to a target, the automatic adjusting device having an autocollimator, comprising a light source, a splitter cube and an objective. The autocollimator generates an illum... | 12/04/1990 |
| 4963724 | Apparatus for producing an optical image contrast An apparatus for producing an optical image contrast which may be used in a microscope is disclosed. Specifically, the apparatus is based on the Moire effect and uses two screens or gratings which are rotated simultaneously at different angular velocities... | 10/16/1990 |
| 4941907 | Process for producing an optical fluorophosphate glass having anomalous positive partial dispersion Optical fluorophosphate glass which is based on Mg(PO3)2, Ca(PO3)2, Ba(PO3)2, Al(PO3)3, MgF2, CaF2, SrF2, AlF3, BaO and SrO and ... | 07/17/1990 |
