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Fisher-Price, Inc. is an American company that produces educational toys for infants, toddlers and preschoolers, headquartered in East Aurora, New York. It was founded in 1930 during the Great Depression by Herman Fisher, Irving Price, Helen Schelle and Margaret Evans Price. Fisher-Price has been a wholly owned subsidiary of Mattel since 1993.
The first catalog, the 400 page Scientific Materials Co. Catalog of Laboratory Apparatus & Supplies, was published in 1904. Fisher established an R&D lab at his company in 1915. Edwin Fisher, Chester's brother, developed the Meker-Fisher burner in 1921, an advancement on the design of the Bunsen burner. [2]
Fisher tube equipment is considered quite collectible today. Fisher's first receiver was the model 500, a mono AM/FM receiver using two EL37 output tubes. It had a brass-plated face panel and an optional mahogany or "blonde" wooden case. This early mono receiver should not be confused with the later stereo tube receiver models, the 500B and ...
The PXL2000 was produced in two versions: model #3300 at $100 [5] [6] with just the camera and necessary accessories; and #3305 at $150 [7] adding a portable black and white television monitor with a 4.5-inch (110 mm) diagonal screen. Extra accessories were sold separately, such as a carrying case.
The French scale, also known as the French gauge or Charrière system, is a widely used measurement system for the size of catheters.It is commonly abbreviated as Fr but may also be abbreviated as Fg, FR or F, and less frequently as CH or Ch (referencing its inventor, Charrière).
The insertion of a plastic cannula and withdrawal of the needle was introduced as a technique in 1945. [11] The first disposable version to be marketed was the Angiocath, first sold in 1964. In the 1970s and 1980s, the use of plastic cannulas became routine, and their insertion was more frequently delegated to nursing staff. [12]
It was not until the 1960s that needle meters were made inexpensively enough in Japan to displace indicator tubes. [2] Tuning indicator tubes were used in vacuum tube receivers from around 1936 to 1980, before vacuum tubes were replaced by transistors in radios. [3] An earlier tuning aid which the magic eye replaced was the "tuneon" neon lamp ...