Quotables
"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8070493 | Measurement system apparatus and method of teaching units of measurement A measurement system apparatus is provided, which includes an elongated bar and a plurality of discrete measurement unit pieces received along the bar. The elongated bar is metered in accordance with a measurement system. Each measurement unit piece represents an in... | 12/06/2011 |
| 8021158 | Measurement instruction apparatus A multi-scaled instructional apparatus is provided in which a plurality of measurement scales are disposed on a base medium. Each of the measurements scales are longitudinally aligned such that equal units of measure are commonly aligned among all of the measurement... | 09/20/2011 |
| 7632099 | Measurement system apparatus and method of teaching units of measurement A measurement system apparatus is provided, which includes an elongated bar and a plurality of discrete measurement unit pieces received along the bar. The elongated bar is metered in accordance with a measurement system. Each measurement unit piece represents an in... | 12/15/2009 |
| 7257915 | Display system for a gasoline pump and method of use A display system which is mounted on top of a gasoline pump includes a housing having a plurality of display stations. A display module containing replaceable advertising information is installable at each display station, the display module including a business car... | 08/21/2007 |
| 7155838 | Apparatus for gauging a dimension of an object An apparatus for gauging the dimension of an object. The apparatus has a wall with a generally flat front surface, facing a first direction, and a peripheral edge. Space graduations are provided on the wall relative to which a dimension of an object placed in front ... | 01/02/2007 |
| 7045197 | Self-measuring roll goods Self measuring roll goods includes a pliable substrate, a front surface, and a rear surface. The rear surface includes fiducial markings to facilitate the quick and easy measurement of the roll goods. The fiducial markings include an array of symbols, and at least a... | 05/16/2006 |
| 6033282 | Multipurpose built-up measuring device Different types of measuring devices detachably built up with different elements are provided. The elements for forming the built-up measuring devices include suitable numbers of connecting rule elements, corner elements, swing elements, fixing bars, and ... | 03/07/2000 |
| 5366378 | Visual teaching aid A visual teaching aid adapted for the versatile teaching of various mathematical relationships, incremental scales, and other sequential and educational concepts. The teaching aid includes an elongated board, a plurality of elongated insert cards each bei... | 11/22/1994 |
| 4971560 | Teaching aid and method for improving memorization of fundamental facts in the form of equations A teaching aid for increasing the memorization of a large number of equations comprising a front cover having a vertical column of horizontally disposed completed equations visible thereon and which front cover forms a cut out portion adjacent the vertica... | 11/20/1990 |
| 4842521 | Visual aid ruler A visual teaching aid adapted for teaching groups of students in a classroom environment how to read rules and understand dimensional relationships. The teaching aid includes a relatively large sized elongated board adapted for horizontal wall mounting. T... | 06/27/1989 |
| 4838794 | Metric block toy A metric block toy comprising ten blocks of varying colors, each block being a one tenth of a meter cube, and having indicia designating ten centimeter increments along one edge of each block, together with other legends designating the length of the edge... | 06/13/1989 |
| 4778390 | Method and apparatus for teaching fractions The present invention is directed to a method and apparatus for teaching fractions to school age children. The invention provides an instrument having a base with at least two aligned scales of corresponding numerical indicia subdivided into different fra... | 10/18/1988 |
| 4721467 | Metric system teaching/playing cards The invention comprises a deck of playing cards for teaching and learning basic metric system words and prefix values in an enjoyable manner. The deck comprises a plurality of suits of cards; each suit includes a plurality of cards with each card within a... | 01/26/1988 |
| 4152845 | Metric conversion board An English to metric conversion chart is provided on the face of a wooden board between a pair of spaced parallel grooves extending up and down on the board. A Fahrenheit thermometer is mounted in one of the grooves and a Celsius thermometer is mounted in... | 05/08/1979 |
| 4144657 | Teaching aid for mathematics and number systems An educational system for teaching or aiding in the teaching of mathematics and number systems, and numerical and dimensional relationships comprises a base member having a plurality of parallel extending tracks, each track divided into different units of... | 03/20/1979 |
| 4132348 | Slide calculator and method A construction comprising a sheet of two contiguous detachable leaf members is folded and separated to form slide and sleeve components of the calculator. Fold lines in the sheet are formed parallel to a separation or tear line that divides one leaf membe... | 01/02/1979 |
| 4075770 | Metric system teaching and measuring device A metric system teaching and measuring device. The device is in the form of a tubular meter stick having an internal cross sectional area of ten square centimeters producing the volume of one liter for one meter length of the stick. An attachable base pro... | 02/28/1978 |
| 4057912 | Instrument for facilitating the calculation of equivalent values An instrument for facilitating the calculation of equivalent values includes a plate bearing symbols representing units and dimensions, the plate having a window in which a movable pointer is located. The pointer is movable from a first position represent... | 11/15/1977 |
| 4021923 | Metric unit conversion aid A template incorporating a plurality of openings forming columns and rows having a predetermined alignment and identified by annotations representing metric system units to facilitate use of the device for automatic unit conversion during the performance ... | 05/10/1977 |
| 3992792 | Data conversion apparatus An information storage and display apparatus is described. The apparatus comprises a hand-held container having a bottom member and a cover for storing a plurality of information-bearing discs. Within the container, a pedestal means is provided for suppor... | 11/23/1976 |
