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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7849719 | Locking device The locking device contains an axle, a bolt, a positioning plate, and a cylinder. The axle is connected to a thumb-turn knob and, from a circumference of the axle, a lever is extended perpendicularly. The bolt has a vertical trough in a rear section. An end of the l... | 12/14/2010 |
| 7181938 | Anti-pick mogul cylinder The lock cylinder assembly of the present invention incorporates a number of features designed to defeat attempts to pick or destroy the lock. The lock cylinder assembly employs multiple arrays of pass key pins, making picking of the lock much more difficult. Second... | 02/27/2007 |
| 7003991 | Security and locking mechanism for a double door utilized in a security safe, vault or bunker A security and locking mechanism for the double door type security safe, vault or bunker wherein the double door can be manufactured by conventional structure or the through use of a plurality of modular panels, the locking and securing mechanism comprising a pair o... | 02/28/2006 |
| 6782724 | Semi-trailer locking apparatus This invention involves a locking apparatus for semi-trailers and/or freight delivery units. A pin plate is attached to a standard trailer swing door, roll-up type door or another type of door. A housing is placed in the floor of the semi-trailer. A pin located with... | 08/31/2004 |
| 6688063 | Wood core exterior door with mortise lock A storm door construction includes an internal rectangular frame providing a pane opening, the frame including left and right vertical members, a head panel and a base panel. One of the left and right vertical members comprises upper and lower vertical st... | 02/10/2004 |
| 6539674 | Work bench-tornado safe room A tabletop high relocateable shelter for protecting individuals from dangerous conditions such as hurricanes, tornadoes and the like, that can withstand winds of approximately 450 mph. The shelter can be attached and detached from a concrete foundation. A... | 04/01/2003 |
| 6334278 | Tornado safe room A relocateable shelter for protecting individuals from dangerous conditions such as Tornadoes and the like, that can withstand winds of approximately 450 mph. The shelter can be attached and detached from a concrete foundation. A rectangular frame that is... | 01/01/2002 |
| 6036240 | Bolt seal lock device Two mating L-shaped steel sheet casing members in one embodiment for sliding doors are secured to a corresponding door and have overlying front walls in the closed state. Each member has a plurality of corresponding locking keeper elements. In the closed ... | 03/14/2000 |
| 5875658 | Locking mechanism for gates and hatches A locking mechanism for large gates and hatches, such as visor, deck, bow and stem gates located on the side of a vessel. The locking mechanism includes an elongated hard-surface guide part having a hard-surface guide slot. The locking mechanism also incl... | 03/02/1999 |
| 5832756 | Lock set for swinging industrial door A lockset for paired swinging industrial doors is provided with adjustable mounting to enlarged two inch chain apertures in the doors. The lockset includes a keyset side having a key actuated male vertical bolt for fitting to one door, and a female bolt r... | 11/10/1998 |
| 5709111 | Lock system An improved lock system structured to secure a structure closure in a closed position, the lock system including a main housing with a surrounding wall structure, an open interior and opposing outlet ends, and a pair of opposing track members disposed wit... | 01/20/1998 |
| 5544506 | Auxiliary lock An improved auxiliary lock for closing and fastening a movable part to a stationary part using a key is described. The device comprises a bolt assembly comprising an inner cylinder having a key hole and an outer cylinder encircling the inner cylinder, a f... | 08/13/1996 |
| 5255542 | Locking device for container doors A device for locking a container attached to two leaves of a container door. The device consists of two pieces, one attached to each leaf of the door. A locking bar is inserted through a set of rings, attached to the two pieces, that align when the contai... | 10/26/1993 |
| 4813250 | Lock device with concealed mounting screws A lock device is provided in which the locking bolt can be actuated by turning the outside lock cylinder or the thumbturn to releasably interlock the housing fixed to the inside surface of the door with a strike attached to the door frame. An inside lock ... | 03/21/1989 |
| 4813254 | Bar lock apparatus A bar lock system includes first and second plates. Each plate includes lugs for mating with an adjacent plate. The first plate includes an inner wall defining an axial bore having opposite forward and rearward openings and the second plate includes an in... | 03/21/1989 |
| 4590777 | Doorlock A key operated doorlock, which may incorporate a deadbolt, has a bolt housing that is mounted on the exterior of the door and is held there by being fastened to a spacer disposed within the door and a mounting plate at the interior side of the door. The m... | 05/27/1986 |
| 3953991 | Lock construction A radio-operated lock construction is adapted to be mounted on a door and is positioned to engage a mating piece mounted on the adjacent door jamb to lock the door in the closed position. The lock comprises a lock housing having means for mounting the hou... | 05/04/1976 |
| 3940957 | Bar lock assembly modifications A bar lock assembly secured to opposing door members for constraining the door members each to the other. The bar lock assemblies include a pair of strike plates utilizing the tooth in groove mating concept which have lug members interfacing with each oth... | 03/02/1976 |
