Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7077655 | Calculation training tool, and calculation training system The calculation training tool comprises: a substrate; a plurality of bead-shaped members mounted movably on the substrate; and scales displayed on the substrate surface together with numerals for giving answers when an addition and a subtraction are made by moving t... | 07/18/2006 |
| 6159329 | Self-adhesive graph appliques A method of incorporating small graphs on to pages of text or calculations by using small adhesive-backed appliques or labels which have been pre-printed with a graphical coordinate grid. These appliques eliminate the necessity of a separate piece of grap... | 12/12/2000 |
| 4744282 | Music box with instructional data tables In one embodiment, the musical box includes a box-like support structure and a music device disposed in the interior of the structure. A plurality of flexible continuous webs are sized to wrap around the outside of the structure. Each web has, along its o... | 05/17/1988 |
| 4179825 | Apparatus for teaching numerical concepts A teaching apparatus for use in teaching numerical concepts can be constructed so as to utilize first and second display members which are movably mounted within a housing so that each of the members is capable of being moved from a first position to a se... | 12/25/1979 |
