Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7356951 | Inflatable dancing toy with music An inflatable toy may include a housing, a balloon-like structure, a blower mechanism, a drive mechanism, and a motor. The balloon-like structure may include a base, an inflatable portion, and an inlet. The base and the inflatable portion may define an air storage a... | 04/15/2008 |
| 7302769 | Interchangeable fan assembly for cold-air inflatable displays An inflatable display that has an interchangeable fan assembly in a position on the inflatable figure that allows optimum airflow into the display. One interchangeable fan assembly can be used for a plurality of inflatable figures by detaching the interchangeable fa... | 12/04/2007 |
| 7296371 | Banner A banner (1), which can be dragged by an airplane (2) using a drag rope (3), includes a banner rod (5) which is connected to the drag rope (3) by way of a banner spider (4). Disks (10) acting as trailing wheels are ar... | 11/20/2007 |
| 7204049 | Emergency drop system for an aircraft advertising display An emergency drop system allows ballasted advertising banner (14) if disconnected from an aircraft to descend slowly to the ground. Banner (14) is suspended below an aircraft by line (4) held taut by ballasted container (24). Static line ... | 04/17/2007 |
| 7095867 | Portable audio reproduction system A portable system capable of receiving audio signals from one or more sources and reproducing the signals via speakers contained therein. The portable audio reproduction system can include a docking station or similar means for communicatively coupling an audio devi... | 08/22/2006 |
| 6458007 | Balloon holder A balloon holder for retaining a plurality of balloon strings attached to balloons includes a base portion having a forward end, a back end, and lateral sides. The base has an aperture formed in the base portion while at least one slot is formed in the fo... | 10/01/2002 |
| 5365685 | Aerial advertising wind tube A lightweight wind tube utilized for advertising, constructed of fabric with a constant diameter having annular sleeve at each end. The forward end sleeve being held in an open circle by flexible frame members with furled ends which are positioned in late... | 11/22/1994 |
| 5141796 | Towed array streamer A towed array streamer including a buoyant core, a data bearer layer, longitudinally positioned strain members and at least an outer jacket in which a strain member support has provided in it a series of longitudinally running grooves accommodating strain... | 08/25/1992 |
| 4607444 | Portable illumination display sign An illuminated sign assembly structured to be portable and thereby usable in a variety of applications such as emergency signalling for distressed vehicles. The sign assembly is formed from a flexible material base capable of being folded upon itself and ... | 08/26/1986 |
| 4586456 | Inflatable balloon distress marker having small article containing compartment therein A balloon distress marker wherein the balloon has, in a wall thereof, a small compartment interiorly of the balloon and accessible through an aperture in the wall of the balloon for retaining an article therein. The compartment is substantially smaller th... | 05/06/1986 |
| 4416073 | Water-borne inflatable promotional device An inflatable display is adapted to be towed over the surface of a body of water and includes an inflatable body which in the disclosed embodiment has an elongated ballast along the bottom to provide a keel-like structure and a blower to continuously forc... | 11/22/1983 |
| 4406433 | Leading edge inlet for ram air pressurized airfoil The air scoop opening at the leading edge of a flexible, ram-air inflated airfoil canopy, is framed between curved lip sections extending tangentially from the upper and lower surface members of the canopy to prevent airflow separation adjacent the leadin... | 09/27/1983 |
| 4307537 | Airborne floating lift-weight balanced toy An airborne, free floating, lift-weight balanced toy for manual manipulation includes a closed envelope of polyethylene terephthalate (Mylar) filled with helium. The envelope is exactly counterbalanced with one or more ballast members so that the toy will... | 12/29/1981 |
| 4236333 | Sign structure A sign structure which may be supported from aircraft, and especially helicopters. The structure is comprised of three distinct sections which may be compactly transported and then easily assembled and connected around the landing gear on the underside of... | 12/02/1980 |
| 4178706 | Vehicle towed display device A display device in which a banner towed behind a moving vehicle such as a boat, is stabilized by a self-regulating drogue parachute attached to the trailing end of the banner so as to maintain the banner in a vertical plane with its longitudinal axis sub... | 12/18/1979 |
| 4165876 | Container for a line for towing an aerial target and process for loading the line into the container A container for a line or cable for towing an aerial target, the container having a streamlined cylindrical body stowed under the towing airplane, with an open rear extremity into which the cable cartridge or loader is inserted. A pyrotechnical release de... | 08/28/1979 |
