Sharp Donald Jex: Nonreflecting photomasks and methods of making same. Western Electric Company Incorporated, November 23, 1971: US3622319 (168 worldwide citation)

A nonreflecting photomask comprises a pattern of an anodized, film-forming material on a transparent substrate. The thickness of the anodic oxide is chosen such that when the mask is employed in selectively exposing a photoresist-coated body to light (by placing the oxide against the photoresist), d ...

Kagan Sholly: Paging receiver having cycling eccentric mass. Bell & Howell Company, November 23, 1971: US3623064 (162 worldwide citation)

A radio-operated paging receiver is fitted with an electrically driven vibrator which causes the receiver to vibrate at a subaudible frequency when a paging signal is received.

Dilks Uselma Clarke S, Hopkins James E, Marquis Carl W, Nonken Howard R: Automatic ticket/credit card check-in system. Burroughs Corporation, November 23, 1971: US3622995 (159 worldwide citation)

Data processing systems for automatic, on-line checking of numbered reservations and/or the control of credit card purchases, without referencing any data on the ticket or credit card itself. Such systems include a central processor, a remotely addressable central data store for reservation and cust ...

Paine T O Administrator of the National Aeronautics and Space, N A, Seaton Arthur F: Conical reflector antenna. November 23, 1971: US3623114 (144 worldwide citation)

A conical reflector antenna is disclosed with a feed that is either a close approximation to a line source or a cylindrical structure which is electrically equivalent to a line source. Nearly complete control of its aperture illumination function is achieved by exciting various amounts of the line s ...

Muncheryan Hrand M: Laser eraser and microwelder. November 23, 1971: US3622743 (118 worldwide citation)

A laser eraser and microwelder capable of operating with a pulsed or continuous-wave laser radiation is described. The device comprises a laser generator, a miniaturized electric power supply unit and a laser working head connected to the power supply unit through a flexible lasing fiber optics acco ...

Kruszynski Tadeusz, Van Der Floe Hans, Eggiman Fritz, Wildhaber Ekkehard A: System for the parallel transmission of signals. Autophon Aktiengesellschaft, November 23, 1971: US3622885 (100 worldwide citation)

A system for transmission of continuous signals wherein the signals are sampled into sections, which sections are subsequently assembled into groups. A frequency band is permanently associated with each section dependent upon its position within the group and for each section an alternating-current ...

Giles George R, Shuda Donald G, MacDavid Kenneth R: Data modulator employing sinusoidal synthesis. Sanders Associates, November 23, 1971: US3623160 (93 worldwide citation)

Multitone data-transmitting apparatus employing sinusoidal synthesis with harmonic cancellation. A multitone data transmitter employs relative phase displacements between plural digital waveforms all of which are representative of a tone to be transmitted and a weighted summing network for summing t ...

Fujimoto Kyohei, Hiroi Yoshiyasu: Folded integrated antenna and amplifier. Matsushita Electric Industrial, November 23, 1971: US3622890 (81 worldwide citation)

An integrated antenna system comprising a ground plane, at least one vertical element substantially perpendicular to the ground plane, a helically shaped element having horizontal polarization and a solid state circuit located at the junction of the horizontal and vertical elements. The described an ...

Hogan John P, Witt Donald R: Olefin polymerization with chromium and titanium-containing compounds. Phillips Petroleum Company, November 23, 1971: US3622521 (80 worldwide citation)

Catalyst formed by first adding to a support a chromium-containing compound using an aqueous medium and then adding a titanium-containing compound using a nonaqueous medium.

Short Rolland W P, Verbanac Frank: Compressed tablets containing compacted starch as binder-disintegrant ingredient. A E Staley Manufacturing Company, November 23, 1971: US3622677 (79 worldwide citation)

A directly compressed tablet containing as a binder-disintegrant ingredient, a partially cold-water soluble, cold-water swelling starch material derived from compacted granular starch, e.g. compacted native corn starch. The compacted granular starch is a superficially dry, free-flowing powder in whi ...