Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7389615 | Friction compression brace system A sheet is removably positionable adjacent to a window. The sheet has upper, lower and side edges. A plurality of braces is secured to the sheet. Each brace has a metal base plate and a pair of fixed housings. A vertical push rod is slidably supported in each fixed ... | 06/24/2008 |
| 7243590 | Protective ballistic weapons stands and transparent shields useable therewith A ballistic weapon stand has a base plate for mounting armor panels having front and rear faces. The armor panels are fastened to and extend upwardly from the base at an angle in the range of 10–30° with respect to the vertical to define a protected space behind ... | 07/17/2007 |
| 7021189 | Turret for a military vehicle A turret for a military vehicle, mobile in traverse with respect to said vehicle and supporting an oscillating mass notably comprising a cannon oriented in elevation, wherein said oscillating mass is mounted in said turret using a linking interface ensuring the air-... | 04/04/2006 |
| 6668736 | Drop and slide escutcheon A drop and slide escutcheon system where the escutcheon has rims with locking members that fit into locking grooves formed in the funnels on the safe body. The escutcheon is offset by a slight amount, allowing the locking members to slide down into openin... | 12/30/2003 |
| 6490893 | Portable lockbox A portable lock-box for storing and safekeeping valuables including money and credit cards. The portable lock-box includes a hand-held container having a front wall, a back wall, side walls, and end walls with one of the end walls having a slot disposed t... | 12/10/2002 |
| 6425311 | Pry-proof gun port The invention is a pry-proof gun port for shielding a gun whenever the gun port is in a closed position and for permitting the gun to be discharged through the gun port whenever the gun port is in an open position. The gun port includes a frame mountable ... | 07/30/2002 |
| 5165768 | Display case security apparatus A display case security apparatus has a lower chamber having a top partition wall and a bottom wall. There is an upper chamber. A partition wall has a plurality of ports therethrough that provide access between the lower chamber and upper chamber. There i... | 11/24/1992 |
| 5124208 | Fire resistant windows An optically transparent aqueous intumescent gel for use with transparent laminates comprising about 5 to 30% by weight acrylamide, about 0 to 4% by weight of a crosslinking agent, about 5 to 28% by weight of an ammonium or alkali metal salt of an alkanoi... | 06/23/1992 |
| 4972784 | Intellectronic safe deposit box An intellectronic safe deposit box which is generally comprised of a housing and an electronic security control portion and characterized in that any wrong numerical code input made by burglar will be immediately detected by means of electronic control an... | 11/27/1990 |
| 4646616 | Hatch cover for a combat vehicle An armored hatch cover for a combat vehicle which covers the hatch opening in the vehicle turret is pivotally mounted between an open position which provides essentially circumferential direct observation from the hatch and a closed position in which the ... | 03/03/1987 |
| 4625659 | Security window or door A bullet- and explosion-proof security structure such as a window or door for closing an opening in the wall of a building or the like has two plate-like panels (5) and (6) which are enclosed in respective frames (2, or 3 and 4) so located that the panels... | 12/02/1986 |
| 4555991 | Guard-house of improved type The armoured guard-house allows one or more guards to be protected and is provided with an armoured lateral envelope provided with at least one glazed observation area or window protected by bullet-proof glass, a base and an upper closure canopy. The wind... | 12/03/1985 |
| 4505972 | Crack propagation resistant acrylic sheet Improved crack propagation resistant acrylic sheets are provided: These sheets are prepared by copolymerizing methyl methacrylate with minor amounts of lower alkyl (C2 -C4) methacrylates. One and one quarter inch thick sheets polymer... | 03/19/1985 |
| 4412495 | Total body protective shield A Total Body Protective device including a pair of fabric panels made of bullet-proof material, handles on an upper of the panel pieces for holding the device in front of a person, and a window through the top panel piece for observing an assailient, and ... | 11/01/1983 |
| 4245566 | Safety shield for vacuum/pressure chamber viewing port A safety shield for protecting observers from flying debris resulting from a failure of a vacuum or pressure chamber viewing port following an implosion or explosion includes an optically clear shatter-resistant safety shield member spaced apart from the ... | 01/20/1981 |
