Abstract: In a method of maintenance of a location fingerprint database for an area, signal measurement data is collected together with motion sensor data from each of a plurality of portable devices transiting a portion of the area of the location fingerprint database. The motion sensor data is collected by a sensor assembly in each of the plurality of portable devices. Offline non-causal processing is used to process the collected motion sensor data into reference positions associated with the portion of the area. The collected signal measurement data is employed together with the reference positions to update the location fingerprint database.

Abstract: A reclosable display package of thin flexible thermoformed plastic material for packaging and displaying an article therein, the reclosable display package includes a first package portion having a base with a retaining surface and a peripheral edge, a wall surface connected at a bottom edge extending generally perpendicular to the retaining surface along the peripheral edge thereof forming a cavity for accepting the article, and a flange extending from a top edge of the wall surface to form a first mating surface, wherein the flange is formed with a female connecting surface portion and a male connecting surface portion symmetrically spaced apart from one another about a central axis through the first package portion.

Abstract: A reclosable display package of thin flexible thermoformed plastic material for packaging and displaying an article therein, the reclosable display package includes a first package portion having a base with a retaining surface and a peripheral edge, a wall surface connected at a bottom edge extending generally perpendicular to the retaining surface along the peripheral edge thereof forming a cavity for accepting the article, and a flange extending from a top edge of the wall surface to form a first mating surface, wherein the flange is formed with a female connecting surface portion and a male connecting surface portion symmetrically spaced apart from one another about a central axis through the first package portion.

Abstract: A sanding block has a first member having an intermediate portion and a pair of relatively flexible ends wherein a top surface of the first member is configured to be hand held and a bottom surface of each of the ends has at least one retention open surface therein, a second member having an intermediate portion connected to the intermediate portion of the first member and a pair of ends wherein a top surface of each end of the second member has extending therefrom at least one complementary retention protrusion which respectively seat in one of the retention open surfaces, wherein the sanding block includes at least one hollow surface formed therein, and having a relatively lightweight support member disposed within the hollow surface.