Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 6177980 | High-throughput, maskless lithography system A microscopy and/or lithography system uses a comparatively low-resolution image projection system, which has a very small numerical aperture but large image field, in conjunction with a microlens array comprising miniature lens elements, each of which ha... | 01/23/2001 |
| 4455558 | Combined analog digital symbols There is disclosed a process for displaying numerical information in symbolized digital form while providing by the same symbolizing an analog presentation of changes in the information being displayed. According to the invention, numbers are represented ... | 06/19/1984 |
| 4389653 | Line recording device In the disclosed recording device, variable values are measured and recorded on a recorder carrier by moving the record carrier along a given direction. A number of recorders form a row and define separate tracks along the direction when the record carrie... | 06/21/1983 |
| 4200876 | Water level recorder A water level recorder for use with pressure-sensitive chart paper and having a framework with a lead screw rotatably mounted in the framework. A pulley is secured to the lead screw. The pulley is driven by a tape which is positioned by a float that is ad... | 04/29/1980 |
| 4180823 | Control device for controlling the movements of two carriages of a duplex recorder A control device for controlling the movements of first and second recording means support-carriages of a two-carriage duplex recorder, comprising a flexible elongated traction means connected to said first carriage, and drive means associated with said t... | 12/25/1979 |
| 4031562 | Device for creating a display of a variable, the value of which is digitally encoded A device for creating a display of a variable, the instantaneous values of hich are converted into a digital voltage signal which is encoded into a code created in conformity with a numerical system such as the decimal system or the octal system. The encod... | 06/21/1977 |