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The binder clip was invented and patented in 1910 by Washington, D.C. area resident Louis E. Baltzley, to help his father, a writer and inventor, hold his manuscripts together more easily. [4] While similar designs have since been patented five times, the most produced version remains the U.S. patent 1,139,627 .
Extra Large - 3.25 kg (7.2 lb) Side SAPI (SSAPI, S-SAPI) torso side plates are only in 6 in × 8 in (150 mm × 200 mm) size, and weigh around 1 kg (2.2 lb). [ 13 ] The replacement for the S-SAPI in U.S. Army, the Enhanced Side Ballistic Inserts (ESBI, E-SBI), originally had only the 7 in × 8 in (180 mm × 200 mm) size, Small and medium were ...
[3] In the United States, the specifications for non-medical industrial staples are described in ASTM F1667-15, Standard Specification for Driven Fasteners: Nails, Spikes, and Staples. A heavy duty office staple might be designated as F1667 STFCC-04: ST indicates staple, FC indicates flat top crown, C indicates cohered (joined into a strip ...
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A standard 8 + 1 ⁄ 2 by 11 inches (220 mm × 280 mm) sheet of paper has three holes with spacing of 4 + 1 ⁄ 4 inches (110 mm). There is a variant for half-letter size pages (8 + 1 ⁄ 2 by 5 + 1 ⁄ 2 inches or 220 mm × 140 mm), whose three rings are 2 + 3 ⁄ 4 inches (70 mm) apart. "Ledger" size binders hold 11-by-17-inch (28 by 43 cm ...
The earliest known patent of a flipchart is from May 8, 1913. [3] Flip charts have being in use from the 1900s, the earliest recorded use of a flip chart is a photo from 1912 of John Henry Patterson (1844-1922), NCR's CEO while addressing the 100 Point Club standing next to a pair of flip charts on casters. [4]
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