Kenneth A Aho, Jeffrey J Melby, Richard A Miller: Back-lit display. Minnesota Mining and Manufacturing Company, Donald M Sell, Walter N Kirn, Stephen Buckingham, October 17, 1989: US04874228 (81 worldwide citation)

A back-lit display utilizes a light transmissive film having a smooth surface and a structured surface. The structured surface has a series of triangular prisms running parallel or concentric to one another. A reflector is placed adjacent to the smooth surface so that light entering the film at an a ...

Patricia A Antoni, Timothy J Nolan, Thomas J Hayes, Theodore R Arneson, Jerry E Coleman: Serving tray and cover therefor. Packaging Corporation of America, Neuman Williams Anderson & Olson, October 17, 1989: US04874083 (81 worldwide citation)

A serving tray is provided for use with a removable cover. The tray is provided with a rim section having a laterally extending ledge portion and a skirt portion depending therefrom. The skirt portion having upper edge segments spaced from the underside of the ledge portion and cooperating therewith ...

Jay R Goldberg, Donald V Hillegass: Ureteral stent system. Medical Engineering Corporation, Quarles & Brady, October 17, 1989: US04874360 (80 worldwide citation)

A ureteral stent has a main body that is soft and flexible and a proximal hook portion which is stiffer to minimize expulsion from the kidney.

K Barry A Williams: Method of making a multilayer electrical coil. The Foxboro Company, Fish & Richardson, October 17, 1989: US04873757 (80 worldwide citation)

A monolithic multilayer electrical coil uses advanced printed wiring board technology to create a monolithic component having plural parallel multi turn planar coils interconnected by solid vias of plated metal on a single substrate preferably designed as a surface mounted device.

Arthur E Ellison: Tissue retractor. October 17, 1989: US04874375 (80 worldwide citation)

An improved tissue retractor serves as a multifunctional surgical instrument particularly adapted for use during arthroscopic surgery. The instrument is preferably capable of putting tissue into tension either in a direction toward the arthroscopic portal or away from the portal. When tensioning tow ...

Jean Jacques Monfort: Processing system for a gambling game. Wenderoth Lind & Ponack, October 17, 1989: US04875164 (80 worldwide citation)

A processing system for a gambling game includes a first self-contained and portable device enabling the reading, erasing and inscription on a data medium as well as the verification of the result of a drawing; a second fixed device associated with a computer of a betting management center enabling ...

John F Brown III: Method for implementing synchronous pipeline exception recovery. Digital Equipment Corporation, Arnold White & Durkee, October 17, 1989: US04875160 (79 worldwide citation)

Pipelined CPUs achieve high-performance by fine tuning the pipe stages to execute typical instruction sequences. Atypical instruction sequences result in pipeline exceptions. The disclosed method provides graceful exception handling and recovery in a micropipelined memory interface. The use of a mem ...

Alice R Smallwood: Combined amusement device and transport and storage pack. W Kirk McCord, October 17, 1989: US04874340 (78 worldwide citation)

A combined children's amusement device and transport and storage pack is constructed of first and second substantially rectangular members having a central portion disposed therebetween for joining the first and second members together. Each member has opposite inner and outer major surfaces. A thre ...

Carolyn M Smith: Processing apparatus for generating flow charts. British Telecommunications, Nixon & Vanderhye, October 17, 1989: US04875187 (78 worldwide citation)

A CAD system for determining interconnecting lines for (e.g.) information boxes of a flow chart limits the number of vectors (lines parallel with the vertical and horizontal axes of a display device) used to effect an interconnection. The system follows a number of rules which result in a more aesth ...

Ralph L Hollis Jr: Magnetically levitated fine motion robot wrist with programmable compliance. International Business Machines Corporation, Philip J Feig, October 17, 1989: US04874998 (77 worldwide citation)

Selective compliance in up to six degress of freedom in a magnetically levitated fine motion device, or robot wrist, with limited motion in X,Y,Z, ROLL, PITCH, YAW, is provided by controlled actuation currents applied to six electrodynamic forcer elements. The wrist has a stator support base definin ...

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