Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 6416666 | Simplified filtration system A filtration apparatus includes a container (24) that surrounds at least one rapidly rotating membrane pack (32, FIG. 2) and stationary turbulators (36A, 36B ) slightly spaced from the membrane pack surfaces to leave thin gaps (40A, 40B ) between them, wh... | 07/09/2002 |
| 5246600 | Centrifugal vacuum filter A drum vacuum filter is shown which draws-in and radially outwardly projects the liquid content of a slurry or the like while the latter is advanced vertically along a passageway defined between a cylindrical rotating filter and a rotating drum wall, the ... | 09/21/1993 |
| 5227066 | Apparatus for separating living cells A centrifugal separation method for living cells is disclosed in which a cell containing solution is charged in a rotor chamber confined by a steam pressure-resistant wall. A rotor having septa is disposed in the rotor chamber. The septa are rotatable in ... | 07/13/1993 |
| 5096581 | Centrifugal oil filter Centrifugal oil filters are described comprising a rotatable centrifugal cleaning cartridge, a shaft for rotation thereon, a co-operating member for connecting the filter assembly to a source of fluid to be cleaned, an outer casing member, a closure membe... | 03/17/1992 |
| 4968789 | Process and means for the purification of cellulose ethers Process and means for purifying cellulose ethers without flocculation points or with relatively high flocculation points (up to 95° C.) and thermoplastic, i.e. highly propoxylated, products made from cellulose in any form, the crude product is first susp... | 11/06/1990 |
| 4889627 | Pusher centrifuge In a pusher centrifuge comprising substantially cylindrical sieve or straining drums which simultaneously rotate but also oscillate relative to one another, and a pusher bottom or base, the pusher edge of at least one sieve or straining drum is provided w... | 12/26/1989 |
| 4717478 | Apparatus for improving characteristics of sand In apparatus for removing water and impurity components from sand, there are provided a rotary member having an opening at one end for charging and discharging sand and a filter for passing water. The rotary member is supported by a support and driven by ... | 01/05/1988 |
| 4717485 | Multi-phase separator with porous filter disks An apparatus for separating multiple phases of solids or fluids includes an exterior housing having an interior chamber. A plurality of porous filter disks is positioned within the interior chamber and have a common central passage. The disks are capable ... | 01/05/1988 |
| 4283938 | Method and apparatus for dynamic concentration of a suspension In the dynamic concentration of a suspension, in which the suspension is fed into a filter which has a driven stirring device, and in which the suspension forms a filter cake which is continually remixed by stirring with the suspension being dehydrated an... | 08/18/1981 |
| 4283286 | Centrifuge with product accelerator A centrifuge, preferably of the type having an upright axis, e.g. a wobble centrifuge, is provided with a distributor for the product to be centrifuged. The distributor, which is rotatable with the shaft, e.g. by being connected to the drum or basket or t... | 08/11/1981 |
| 4184964 | Centrifuge A wobble centrifuge has a housing in which a tube shaft is rotatable about a first axis, this tube shaft having a lower tube part centered on the first axis and an upper tube part centered on a second axis that crosses the first axis at an intersection. A... | 01/22/1980 |
| 4153551 | Wobble centrifuge and method of operation A centrifuge has a drum to which a wobble or nutating motion is applied to discharge the centrifuged material over the edge of a wall of the perforated basket. The wobble or nutation is caused by tilting the axis of this wall relative to the axis rotation... | 05/08/1979 |
| 3994809 | Centrifugal separator with viscosity differentiating adhesion means A method of and an apparatus for separating a fluid including a plurality of fluid components of different viscosities. The fluid is centrifugally accelerated and contacts a solid viscosity differentiating adhesion means. The degree of adhesion of the dif... | 11/30/1976 |