1
Stamm Robert Franz: Retroreflective surface. American Cyanamid Company, January 23, 1973: US3712706 (266 worldwide citation)

A retroreflector of unusually high retroreflective efficiency comprises an array of cube corner reflectors arranged as shown in FIG. 1. The cube corners are made so extremely accurately and of such small size teat diffraction is the predominant factor governing the divergence from perfect retrorefle ...


2
Cardullo Mario W, Parks III William L: Transponder apparatus and system. Communications Services Corporation, January 23, 1973: US3713148 (178 worldwide citation)

A novel transponder apparatus and system is disclosed, the system being of the general type wherein a base station transmits an 'interrogation' signal to a remote transponder, the transponder responding with an 'answerback' transmission. The transponder includes a changeable or writable memory, and ...


3
Owen Harrold D, Rosenthal Wayne O, Young James Douglas: Conduit liner for wellbore and method and apparatus for setting same. Gearhart Owen, January 23, 1973: US3712376 (166 worldwide citation)

A method of emplacing a liner in a conduit in a well penetrating subterranean formations characterized by positioning with a wire line a cylindrical annular liner at a given depth in the well, the liner being disposed adjacent a swaging mandrel and a setting sleeve, both being connected with a setti ...


4
Castellion George Augustus, Spitzer Donald Paul: Solid state electrochromic mirror. American Cyanamid Company, January 23, 1973: US3712710 (135 worldwide citation)

Electro-optical device particularly useful in the modulation of reflected light typically comprising an electrochromic device containing a reflecting layer electrode in sandwiched arrangement, said electrochromic device being a sandwich arrangement of a transparent electrode, a reflecting layer elec ...


5
Snowdon Charles, Redhead Robert Gonne: Medical treatment apparatus. January 23, 1973: US3712298 (120 worldwide citation)

Apparatus and method for treating a human limb. The apparatus comprises a container connected to a source of gas under pressure. The limb intrudes into the container through a seal which allows gas to leak out over the surface of the limb at a controlled rate, so ventilating the limb. The leaking se ...


6
Mielke Jr Clarence Harold: Apparatus and method for measuring hemostatic properties of platelets. January 23, 1973: US3712293 (113 worldwide citation)

An apparatus and method for making a standardized reproducible blade incision in the subject's forearm for the purpose of measuring his bleeding time. A blade is precisely mounted on the blade holder by use of a gauge block, and a flat template with standard thickness and standard length of slot is ...


7
Maynard James G, Brown George F: Refrigeration unit. Krispin Engineering, January 23, 1973: US3712078 (98 worldwide citation)

This invention relates to a refrigerator and to a refrigerating unit for a refrigerator that can be adapted by minor adjustment for mounting in refrigerating cabinets of different design. Essentially the refrigerating unit is a complete unit that has a chamber for the heat exchanger with two opening ...


8
Zentmeyer Jr John E: Method and apparatus for producing swept frequency-modulated audio signal patterns for inducing sleep. Lafley Karen V, January 23, 1973: US3712292 (82 worldwide citation)

A method of producing sound signals for inducing sleep in a human being, and apparatus therefor together with REPRESENTATIONS thereof in recorded form, wherein an audio signal is generated representing a familiar, pleasing, repetitive sound, modulated by continuously sweeping frequencies in two sele ...


9
Gronholz Donald D: Air cleaner with hinged side walls. January 23, 1973: US3712033 (78 worldwide citation)

A box-like filter housing molded from a plastic material is shown, having a rectangularly shaped pleated filter element and protective screen mounted therein. The housing includes a bottom wall with an aperture, and a pair of opposing side walls each having a hinged upper portion with a lip formed t ...


10
Sarnoff Stanley: Gun type hypodermic injector with rapid cartridge displacement within holder. Survival Technology, January 23, 1973: US3712301 (78 worldwide citation)

A hypodermic injector is provided comprising a sleeve housing a cocked spring impelled plunger, a cartridge holder with a cannula pierceable stopper at the front end thereof attached to the sleeve and a cartridge with front end attached cannula in the holder wherein the rear end only of the cartridg ...