Abstract: Methods and apparatus to adaptively null leakage from a local oscillator.

Abstract: A produce dispenser comprises two members that cooperate to form a column for a stack of produce items. The first member as an upper end that is adapted to hang the dispenser on a vertical surface and a bottom platform that supports the items. The second member is preferably slideable over the first member to selectively totally enclose the stack of items or to expose the lowermost piece of produce in the stack. The dispenser may be made of foldable paperboard or of a moldable plastic material.

Abstract: A produce dispenser comprise two members that cooperate to form a column for a stack of produce items. The first member as an upper end that is adapted to hang the dispenser on a vertical surface and a bottom platform that supports the items. The second member is preferably slideable over the first member to selectively totally enclose the stack of items or to expose the lowermost piece of produce in the stack. The dispenser may be made of foldable paperboard or of a moldable plastic material.

Abstract: A pair of thin walled and nestable trapezoidal hoops have peripheral lengths approximately equal to the peripheral length of a commercial leaf bag near the free edge thereof. The leaf bag is inserted through the inner hoop and the free edge of the bag is folded back over the inner hoop. The outer hoop is nested over the inner hoop, thereby capturing the bag between the hoops and holding the mouth of the bag open. The hoops and bag can then be placed vertically on the ground with the short top section of the hoops serving as a handle gripable with one hand. Leaves can then be horizontally raked into the open bag with the second arm and hand.

Abstract: A sanitary receptacle for animal waste matter is created from three concentric hoops and a sheet of thin flexible material. The material, which may be newspaper, is spread over the inner hoop. The newspaper is captured in the annular space between the inner and center hoops by placing the center hoop on top of the newspaper and pushing the center hoop over the inner hoop. After inverting the inner and center hoops and the captured newspaper, the outer hoop is pushed over the newspaper and the center hoop from the side opposite the center hoop, thereby capturing the material between the center and outer hoops. Removing the inner and outer hoops from the assembled sanitary receptacle allows the edges of the newspaper to be brought together to create a sack for disposing of the animal waste matter deposited on the newspaper.