Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 6139326 | Method and testing instrument for assessing skills of an individual A method for assessing the readiness skills of a child between the ages of two and six years is disclosed. To assess the child's skills, a set of specially designed cards is provided. Each card displays one or more predetermined symbols. The cards are dis... | 10/31/2000 |
| 6024578 | Learning play card The invention provides a card for learning purposes, which has at least two holes 7, 8 of essentially the same size. At least three separate sections 9, 10, 11 are printed on the front side 1 of the card. In each case one section 9, 10 is assigned to one ... | 02/15/2000 |
| 5895050 | Question and answer game A question and answer game is disclosed comprising a card. The card has a first and second side. On the first side, a question and a code key are displayed. The code key correlates answer indicia to key indicia. On the second side, a list of possible answ... | 04/20/1999 |
| 5797601 | User selective solution system and method for flashcards, puzzles, and the like A flashcard type device and method adapted for education and entertainment for use by one or multiple participants and providing answers or solutions partitioned into a plurality of pre-defined discrete segments for providing the user with the option of s... | 08/25/1998 |
| 5759041 | Mathematics teaching device A multiplication table teaching device having a body, the body having a front side and a back side, the front side having 55 multiplication problems located thereon and the back side having located thereon 55 answers corresponding to the multiplication pr... | 06/02/1998 |
| 5741561 | Interchangeable educational writing pad An interchangeable educational writing pad is disclosed. The writing pad includes a double walled vinyl placemat having an opening on one side thereof. The vinyl placemat is provided with a marker attachment. A series of printed paper inserts are provided... | 04/21/1998 |
| 5439232 | Educational card game An educational card game is described which requires a player to identify an object shown in a dictionary-like illustration on the front side of a card. The spelling of the object is alphabetically sequenced between two other words that also appear on the... | 08/08/1995 |
| 5207435 | Word game A game for play between two or more players/teams with a deck of clue cards each having a set of scrambled words imprinted thereon and an unsolved main word thereabove which is represented only by blank spaces and its first and possibly second letters to ... | 05/04/1993 |
| 5186467 | Sports game Two decks of cards are employed in an enjoyable sports trivia and memorabilia game which stimulates a player's ability to recall players on famous sports teams. The first deck of cards is composed of cards having a number printed on one side. The second d... | 02/16/1993 |
| 5018976 | Teaching system for enhancing the learning of sets of facts A flash card type of teaching system includes problem cards that are divided into sets by color coding. A key card that is in view of the student(s) contains answer information that is also color coded to assist the student(s) in choosing the correct resp... | 05/28/1991 |
| 4943054 | Mental game The game comprises supports formed by two superimposed sheets. Cards of a like size, drawn randomly, are housed in the supports and bear on each side one or more first areas in which there is an illustration and first captions relating to the illustration... | 07/24/1990 |
| 4687203 | Scratch and smell game A scratch and smell game for pre-school children which makes use of a playing board on whose front face is printed drawings of different fruits or other odor-producing objects, each having a characteristic smell. At a site adjacent each fruit on the front... | 08/18/1987 |
| 4684136 | Combination tic-tac-toe and question and answer game A game apparatus is provided and consists of nine tic-tac-toe arrangements whereby two teams answer questions until three tic-tac-toe arrangements are won in a vertical, horizontal or diagonal row to completely win the game.... | 08/04/1987 |
| 4505497 | Multi-colored wrapper label with readable data on both sides A Multi-colored composite print is provided on one side of a transparent medium to produce conventionally readable data when viewed from either side. In one embodiment, a first color, on one side of the medium, provides a solid area in that color. Data th... | 03/19/1985 |
| 4498869 | System for teaching visual discrimination of spatially oriented subject matter An instructional system is provided for training persons to more accurately interpret visually perceived stimuli. The system utilizes a kit comprised of figure pages and a set of checking cards for each figure page. The figure pages contain groups of figu... | 02/12/1985 |
| 4493654 | Educational device This invention relates to an educational device having a card with notched edges and a series of numbers or words along each longitudinal edge of the card corresponding to each notch. The correct answer to a problem from one edge of the card, whether arit... | 01/15/1985 |
| 4363628 | Bank training device A device and method of training bank personnel utilizing game techniques. The game board comprises several connected continuous circuits. The circuits have spaces which direct the players to stacks of question and answer cards. The winner is determined by... | 12/14/1982 |
| 4345315 | Customer satisfaction terminal An electronic terminal for electronically collecting opinion data from customers of a service organization as to the satisfaction with the services rendered. The electronic terminal has a keyboard that displays the inquiries with multiple choice responses... | 08/17/1982 |
| 4298200 | Tangram game assembly A Tangram game assembly constituted by two sets of Tangram pieces capable of creating a variety of geometric or representational figures. Also included is a deck of cards, each having printed thereon a Tangram puzzle figure and the solution thereto at a p... | 11/03/1981 |
| 4182051 | Entertainment and/or educational device An entertainment and/or educational device is proposed which comprises a housing having oppositely facing windows therein and a display element within the housing having related markings thereon, the individual ones of the said related markings being simu... | 01/08/1980 |
| 4105202 | Game apparatus A game apparatus and more particularly a game apparatus utilizing a plurality of subject cards with corresponding decks of question and answer cards and including improved means for receiving, retaining and displaying the subject and question and answer c... | 08/08/1978 |
| 4053994 | Educational device A teaching device useful for reinforcing learning and presenting new information to an operator which is adapted for use with cards having related information on both sides of each card such as a question on one face and the answer on the reverse face, an... | 10/18/1977 |
| 4029320 | Educational game apparatus and teaching system An educational game kit including a game board having a pattern of stations and associated chance controlled playing pieces which are movable over the stations along defined paths of travel. The game encompasses the selective introduction of teaching subj... | 06/14/1977 |
| 3939578 | Educational board game apparatus A board apparatus that is comprised of a plurality of diverse game sets, each game set containing a plurality of game board units; each embodying a game board, with a peripheral area containing a closed rectangular path constituting a continuous playing c... | 02/24/1976 |
