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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 |
| 5696355 | Letter weighing device with slidable fulcrum A letter weighing device has a slidable fulcrum to indicate the exact weight of a letter or the like being weighed. The letter weighing device has an elongate member having upper and lower elongate surfaces, the upper elongate surface supporting two space... | 12/09/1997 |
| 4564852 | Pens for low torque chart recorders A disposable marker apparatus for use with low torque recorders includes a bifurcated body with two separate ink reservoirs in the first and second body segments interconnected by a connector segment. The connector segment includes an ink transmitting mem... | 01/14/1986 |
| 4522277 | Rocking scale A rocking scale or weighing device can be constructed so as to include a body equipped with two separate, spaced, identical bowed supports or rockers which extend generally between the ends of the body. A holder capable of holding an envelope or the like ... | 06/11/1985 |
| 4401177 | Sliding weight scale A sliding weight scale includes a recirculating ball spindle mounted in a balance beam arranged to pivot about a swivel axis. The spindle extends perpendicularly of the swivel axis. A sliding weight is engaged via a nut with the spindle. A gear wheel is f... | 08/30/1983 |
| 4368791 | Postage estimator device A device for estimating postage requirements for envelopes and the like, and comprising a holder for supporting the envelope during the estimating process, a balancing lever pivotally secured to the holder and having a fulcrum about which the device may r... | 01/18/1983 |
| 4360072 | Attachment for adding weights to scale beam An attachment to the beam of a weight scale has a vertical post to retain weight unit discs, each with a hole in the center, and clamping means in combination with a counterweight clamped to the second beam of the scale at the opposite end.... | 11/23/1982 |
| 4165791 | Automatic weight switching mechanism for substitution type analytical balances A weight switching mechanism for a substitution type analytical balance is provided which permits the automatic selection and lifting of the required substitution weights from the gimbal assembly of a balance beam to allow accurate weighing of an unknown ... | 08/28/1979 |
| 4095658 | Fluid measurement device A fluid collection, dispensing and measurement device for use in connection with a blood container, for example, and flexible tubing leading thereto. A hollow balance bar, with mobile spherical weights disposed therein is provided and rapid, forceful cut ... | 06/20/1978 |
| 4022289 | Balance A balance beam having a short arm carrying a weighing pan and a long arm whose weight counteracts the torque exerted by the pan on the beam has a longitudinal edge extending over both arms and notched at uniform intervals. A rider weight is movable along ... | 05/10/1977 |
