Sidney T Fisher, Charles B Fisher: Exraction of hydrocarbons in situ from underground hydrocarbon deposits. R H Barrigar, August 3, 1976: US03972372 (59 worldwide citation)

A method of extracting hydrocarbons in situ from an underground hydrocarbon deposit (such as petroleum or lignite). A selected part of the deposit is heated by electrical induction to temperatures high enough to drive off hydrocarbon fractions as gases or vapors, which are then collected. The deposi ...

Luis Bate, Wendell E Dawson: Poultry feeder. University of Prince Edward Island, R H Barrigar, Lynn S Cassan, P Scott Maclean, May 21, 1996: US05517944 (12 worldwide citation)

A feeder for poultry comprising a feed tray, a feed supply stack secured on the tray and audio conveying means to facilitate dispersion of feeding behavior enhancing sounds from the stack a feeding period.

Darren Koretz: Ice fishing rig. R H Barrigar, Lynn S Cassan, May 28, 1996: US05519958 (5 worldwide citation)

There is an ice fishing rig and a kit for the same. The rig is selectively adjustable between `tip-up` and `rod-and reel` configurations. The kit comprises a handle, an elongated reel securable to the handle, and a rod selectively securable to the handle in a forwardly projecting position or a rearw ...