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| Number | Title | Issue Date |
| 4020902 | Well point system A well point system is provided having automatic regulation of the flow of fluid through each riser in order to shut off an individual riser when the water level drops below the well point of that particular riser. The automatic regulation of the flow of ... | 05/03/1977 |
| 4019495 | Control system for solar heater A system for controlling the flow of a liquid through a solar heating system of the type having the output of a solar energy collector coupled to the input of a storage tank and having a circulating pump interposed along a return liquid pipe coupled betwe... | 04/26/1977 |
| 4015112 | Method of making illuminated handbag A method of making a handbag having an illuminatable interior includes steps of attaching an illumination source to the interior of the handbag, along with locating and attaching a latching clasp to the exterior wall of the handbag and a switch to the int... | 03/29/1977 |
| 4011355 | Emulsion coating for lightweight aggregate A coated, lightweight aggregate for mixing with cement, sand and water for producing a lightweight construction material is provided in which expanded polystyrene beads are coated with a mixture formed of dehydrated lime and hydrated alumina with water in... | 03/08/1977 |
| 4009650 | Fruit pitting machine A fruit pitting machine apparatus for separating unpitted fruit from pitted fruit having pitting needles which force fruit pits through a pair of springloaded jaws. As a pit is forced through the jaws a pneumatic valve actuates a pneumatic pressure switch... | 03/01/1977 |
| 4006888 | Dry granular feeder A feeder apparatus for feeding dry, granular material from a barrel into a hopper and from the hopper into a mixing tank has a plunger which accepts small predetermined amounts of material through an opening in the bottom of the hopper, slides to a second... | 02/08/1977 |
| 3996876 | Marine line securing apparatus A line securing apparatus for attaching the line of a marine vessel to a dock, pier, or the like, has a base adapted with a post attached thereto. A plurality of rings is attached to the post and to each other whereby a boat line may be slipped through th... | 12/14/1976 |
| 3968741 | Cooking oil recovery system Continuously flowing cooking oil is recovered by passing the oil through a series of filters, one of which contains a carbonaceous material, such as bone char. The oil may be simultaneously heated during each filtering step, and the acidity of the oil may... | 07/13/1976 |
