1
Watkins Bruce J: Method and apparatus for balancing subsea internal and external well pressures. Regan Forge and Engineering Company, September 7, 1971: US3603409 (138 worldwide citation)

Method and apparatus for maintaining a pressure balance between internal and external subsea well pressures during underwater drilling, entry and reentry operations conducted from a floating vessel remote from the subsea well comprising injecting gas into the wellhead apparatus in amounts sufficient ...


2
Hafner Theodore: Temperature controlled surface wave feeder lines. September 7, 1971: US3603904 (103 worldwide citation)

The invention consists of a surface wave antenna feeder in the form of a conductive tubing coated with a dielectric to produce on the outside of the coated conductor a field carrying substantially the entire electromagnetic wave energy from the transmitter to the antenna, and providing inside the tu ...


3
Kooi Else: Method of manufacturing a semiconductor device and device manufactured by said method. US Philips Corporation, September 7, 1971: US3602982 (89 worldwide citation)

A method for making an integrated circuit with circuit elements dielectrically isolated is described. The method involves growing an epitaxial layer on a substrate, masking where desired the epitaxial layer surface against oxidation, and sinking a thermal oxide into the epitaxial layer. A support is ...


4
Johnson George R: Method for producing cushioning dunnage. The Arpax Company, September 7, 1971: US3603216 (81 worldwide citation)

A method of producing resilient cushioning dunnage comprising taking at least one web of sheetlike material, such as paper, of predetermined width, rolling the lateral edges of the web generally inwardly, generally loosely crumpling the web with the rolled edges radially inwardly into a padlike conf ...


5
Bracken Pat O, Lane George H: Storm warning system. Montech Incorporated, September 7, 1971: US3603951 (81 worldwide citation)

A public warning system for alerting the public of natural disasters, such as tornadoes and other severe atmospheric disturbances, and having capabilities of giving general warning for civil defense for other emergencies. The system also has the capability to act as a sensor grid to obtain scientifi ...


6
Grill Werner K, Link Howard D: Retractable drill bits. Christensen Diamond Products Company, September 7, 1971: US3603413 (78 worldwide citation)

Rotary drill bit cutters lowered on a carrier through a tubular drill string to a drive mandrel or body at the lower end of the string. A device orients or aligns the cutters with slots in the mandrel into which the cutters are expanded and then locked in expanded condition by the carrier, enabling ...


7
Link Howard D: Retractable drill bits. Christensen Diamond Products Company, September 7, 1971: US3603411 (76 worldwide citation)

A carrier supports an upper set of downwardly tapering or wedge-shaped drill bit cutters which overlap and alternate circumferentially with a lower set of upwardly tapering or wedge-shaped cutters, the sets of cutters being in retracted position for movement by the carrier through a tubular drill st ...


8
Kelly William E: Raceway terminator. Thomas & Betts Corporation, September 7, 1971: US3603912 (73 worldwide citation)

A raceway terminator for coupling a jacketed flexible metallic raceway to an electrical enclosure comprising a body portion, a gland nut for assembly therewith, a grounding cone and a sealing ring. The sealing ring has tapered leading and trailing edges and an annular shoulder thereabout which coope ...


9
Kammerer Jr Archer W, Johnson Gary R: Method and apparatus for drilling in casing from the top of a borehole. Baker Oil Tools, September 7, 1971: US3603412 (66 worldwide citation)

Apparatus and method for drilling in casing at the top of a borehole, such as drilling a borehole commencing at an ocean floor, including inserting a retrievable coupling device in a casing shoe aboveground and expanding the coupling members of the device into shoe slots to secure the coupling devic ...


10
Thornton William E: Frequency shift telemetry system with both radio and wire transmission paths. Del Mar Engineering Laboratories, September 7, 1971: US3603881 (66 worldwide citation)

A transmission system using a possibly existing wiring system for transmitting RF signals and covering short distances away from the wiring system through VHF transmission. In hospitals, physiological data are transmitted from a sensor VHF transmitter to a fixed VHF receiver RF transmitter coupled t ...



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