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 |
| 7178307 | Reinforced shelf structure and method A composite corrugated panel is provided comprising a first corrugated panel defining a first corrugation height joined to a second corrugated panel defining a second corrugation height, the joined panels defining a cross sectional thickness that is preferably less ... | 02/20/2007 |
| 6976344 | Method of assembling concrete panel building module with connection plates and resulting module A method of constructing building module and resulting building module are provided, the building module including a building floor panel oriented substantially horizontally; a number of exterior wall panels having exterior wall panel faces and exterior wall panel e... | 12/20/2005 |
| 6421969 | Device forming a partition between storeys The invention relates to a device by a constructional part (1) preferably extending between supporting parts (10, 11, 12) of a building or plant constructions, and preferably forming a partition between storeys, such as a floor or a deck. The construction... | 07/23/2002 |
| 5715644 | Superplastically formed, diffusion bonded panels with diagonal reinforcing webs and method of manufacture SPF/DB structures having diagonal reinforcement webs and processes for the formation of the structures allow greater vertical web height to spacing to be formed. The diagonal webs are constructed by adding at least two additional sheets in the center of a... | 02/10/1998 |
| 5687517 | Skid-resistant roofing underlayment An exemplary skid-resistant roofing underlayment provides a pressure-sensitive membrane attached to a carrier support sheet having at least two different plastic films, the carrier sheet being corrugated with ridges in the machine direction to provide ski... | 11/18/1997 |
| 5384178 | Tube settler assembly This invention relates to an assembly comprising a first corrugated sheet and a second generally planar sheet. The corrugations form alternating apices on opposite sides and equidistant from a central major plane in the first sheet, where the apices are c... | 01/24/1995 |
| 5217788 | Corrugated sheet assembly This invention relates to an assembly composed of a plurality of generally parallel corrugated contact sheets. The corrugations form alternating apices in the sheets. The apices are connected by angled walls. The corrugations in each sheet are substantial... | 06/08/1993 |
| 5028474 | Cellular core structure providing gridlike bearing surfaces on opposing parallel planes of the formed core A three-dimensional structure adapted for use for instance as a core in sandwich panel-type construction, and comprised of substantially continuous unbroken sheet material to which has been imparted an alternating sequence of ridges and valleys, creating ... | 07/02/1991 |
| 4901487 | Cable ducting floor system A flooring module comprised of an upper member and a lower member to be assembled with like modules to provide a flooring, an array of parallel passageways for specific purposes in the upper member defined by bottoms and sides overlying an array of passag... | 02/20/1990 |
| 4827379 | Electrical facility An electrical facility including a plurality of housings each having at least three connecting ports in the opposite end portions and a side portion and having housed therein various electrical devices. An expandable connecting joint connects the housings... | 05/02/1989 |
| 4604842 | Drying bin floor A supported floor for use in a grain storage and/or drying bin is disclosed that is constructed of interlocking perforated flooring or panels of two designs each with a plank portion and subjacent flanges which alternate with each other. The first panel d... | 08/12/1986 |
| 4232612 | Wall lining with attachment means A wall lining sheet, particularly, but not exclusively, for lining the interior end walls of freight railway cars. The wall lining sheet comprises a metal sheet having a plurality of spaced-apart attachment tabs each defined by a configured slot extending... | 11/11/1980 |
| 4154042 | Composite framing assembly Composite members for foundation, floor and roof systems in structures, including multistory structures, the roof assembly of which includes a ceiling and roof member, between which members is sandwiched an expanded foam material; the floor and alternativ... | 05/15/1979 |
| 4133158 | Non-composite impact-resistant structure A non-composite impact-resistant structure of lightweight construction is particularly useful in offshore power stations where weight is a prime consideration, and also is useful as the roof of inland power stations. The structure is fabricated from two t... | 01/09/1979 |
| 4078350 | Impact resistant wall structure An impact-resistant wall structure is fabricated from two types of sheet metal cellular panel units and concrete columns which are enclosed thereby. Inner sheet metal cellular panel units are secured to outboard members of a building framework. Outer shee... | 03/14/1978 |
| 4027447 | Solar panel A panel structure mounted on the roof of a building for permitting solar energy to pass therethrough into the building. The panel structure includes a first translucent panel having corrugations running in a first direction. A second translucent panel is ... | 06/07/1977 |
| 4011703 | Building element for making insulating panels and panels assembled therefrom The invention provides building elements for making floor or wall panels. Each element has a plurality of upper plates and a plurality of lower plates, the plates being aligned, parallel and staggered, with interconnecting webs between the upper and the l... | 03/15/1977 |
| 3950910 | Shelter panel A wall panel having a flat face member and a flat back member with a plurality of corrugated sheets disposed in a plurality of superimposed layers with corrugations of adjacent sheets extending in crossed relation and with such adjacent layers of corrugat... | 04/20/1976 |
