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 |
| 7986367 | Camera system and power supply for optical recording devices A camera system includes a video camera having a first mating mechanism defined on a bottom, planar surface of the video camera. A battery assembly contains an energy cell and a first surface of the battery assembly is releasably engageable with the mounting mechani... | 07/26/2011 |
| 7864244 | Camera system and power supply for optical recording devices A camera system includes a video camera having a first mating mechanism defined on a bottom, planar surface of the video camera. A battery assembly contains an energy cell and a first surface of the battery assembly is releasably engageable with the mounting mechani... | 01/04/2011 |
| 7736773 | Dual power supply for electronic devices A dual power supply assembly for providing power to an electrical device includes a fuel cell and a battery in electrical communication with the fuel cell. The fuel cell and the battery act in tandem to supply power to the electrical device. Either the fuel cell of ... | 06/15/2010 |
| 7724303 | Camera system and power supply for optical recording devices A camera system includes a video camera having a first mating mechanism defined on a bottom, planar surface of the video camera. A battery assembly contains an energy cell and a first surface of the battery assembly is releasably engageable with the mounting mechani... | 05/25/2010 |
| D612815 | Electronic device mounting plate | 03/30/2010 |
| D611412 | Two-sided plug and receptacle | 03/09/2010 |
| 7665698 | Articulated support assembly An articulating support assembly includes a first segment and a second segment. The first and second segments are disposed adjacent to one another. A first mating surface is defined on the first segment and a second mating surface is defined on the second segment. A... | 02/23/2010 |
| D610081 | Power cell assembly | 02/16/2010 |
| 7621681 | Handlebar support apparatus A fully adjustable, handlebar support apparatus is readily attachable to a hand held video or still camera or to another support device, such as a monopod or tripod and includes a flexible, articulating handle which may be grasped by the camera operator and selectiv... | 11/24/2009 |
| D574878 | Flexible support for image recording devices | 08/12/2008 |
| D567981 | Photographic light | 04/29/2008 |
| D559796 | Electronic device mounting plate | 01/15/2008 |
| 7318678 | Self locking ergonomic support assembly for optical devices A support assembly for supporting an optical recording device about an operator includes a shaft having a first distal end for mounting the optical recording device, and a second distal end for bearing against the back of the operator. A friction plate arm is slidab... | 01/15/2008 |
| 7293924 | Shoulder mounted support assembly to hold camera or camcorder A lightweight collapsible, shoulder mounted camera support assembly for carrying a camcorder or camera and holding the same steady during operation has a front and rear portion for mounting a battery to counterbalance the weight of the camera or camcorder mounted on... | 11/13/2007 |
| 6929409 | Shoulder mounted support assembly to hold camera of camcorder A lightweight collapsible, shoulder mounted camera support assembly for carrying a camcorder or camera and holding the same steady during operation has a front and rear portion for mounting a battery to counterbalance the weight of the camera or camcorder mounted on... | 08/16/2005 |
| 6779932 | Shoe and mount assembly to hold camera or camcorder A shoe mount assembly configured for use with a variety of cameras or camcorders. The shoe is attached to the bottom of the camera or camcorder unit. The shoe is detachable and is dimensioned to center fit a corresponding indent in the top surface of the mount. The ... | 08/24/2004 |
| 6247962 | Battery pack connection adapter An adapter plate for an electrical connection between a battery charger and battery pack. The adapter plate includes a partially conductive strip. The pattern of conductive material on the strip is such as to establish a circuit between underlying electri... | 06/19/2001 |
| 5403093 | DT/Dt detector for cell pack charge determination A technique for detecting when a full charge for a cell pack is reached based upon sensing an actual temperature of the cell pack. The initial actual temperature is the first value stored as a reference temperature. During subsequent sampling events, the ... | 04/04/1995 |
| 5208675 | Video camera with integral light assembly A video camera comprises a video camera body and a light module. Structure is provided, integral with the video camera body, for selectively positioning the light module. The light module can be removably connected to the video camera body.... | 05/04/1993 |
| 5057383 | Battery system A battery system includes a battery pack having a plurality of batteries and electronic circuitry for monitoring battery parameters and producing an analog output signal related to the state of the charge in the batteries. An attachment is detachably moun... | 10/15/1991 |
| 4984135 | Interchangeable camera light mount An interchangeable mount for a light housing or module adapted to be mounted on a video or film camera or other support surface includes interchangeable shafts, one of which is affixed to a thumbwheel rotatably mounted in the light housing. Should the cam... | 01/08/1991 |
| 4965738 | Intelligent battery system An intelligent battery system senses current flowing in the direction of charge current through positive and negative terminals and battery cells of a battery pack. In response, a processor within the battery pack transmits battery parameter data to a sep... | 10/23/1990 |
| 4849682 | Battery charging system A system for sequentially charging a plurality of batteries initially interrogates each battery to determine the battery type and the level of charge. The charging system prioritizes the batteries to be charged from most to least fully charged and charges... | 07/18/1989 |
| 4822296 | Electrical connection for battery charging apparatus or the like An electrical connection for a battery pack to a battery charger or the like consisting of a bracket including a substantially flat male plate having a plurality of spaced headed projections and female electrical terminals carried within a projecting hous... | 04/18/1989 |
| 4810204 | Battery pack connection A battery pack connection consists of a substantially flat male plate having a plurality of spaced headed projections and female electrical terminals carried within a projecting housing and a substantially flat female plate having a plurality of keyholes ... | 03/07/1989 |
| 4554621 | Modular light assembly Cube-shaped, ventilated, individual light modules housing a lamp or bulb having different predetermined characteristics are interchangeably mounted on an expandable clip surrounding an electrical socket, by sliding the module down on the clip and simultan... | 11/19/1985 |
| 4554500 | Battery charging apparatus and method A battery charging apparatus and method is disclosed. The battery charger includes a programmable two level constant current source having an inhibit input. A clock signal is fed to counting stages which time out after a specified time, during which time ... | 11/19/1985 |
| 4550968 | Battery pack connection A battery pack connection consists of a flat male plate having a plurality of spaced headed projections and female electrical terminals carried within a projecting housing while a flat female plate has a plurality of keyholes designed to facilitate receiv... | 11/05/1985 |
| 4218107 | Battery pack connection A battery pack connection consists of a flat male plate having a plurality of spaced headed projections and female electrical terminals carried within a projecting housing while a flat female plate has a plurality of through keyholes for receiving the pro... | 08/19/1980 |