Ads
related to: expandable 3 hole binders
Search results
Results from the WOW.Com Content Network
German Friedrich Soennecken invented ring binders in 1886 in Bonn. [2] [3] He also registered a patent on 14 November 1886 for his Papierlocher für Sammelmappen ("paper punch for binders", or hole punch). [3] German Louis Leitz, founder of Leitz, later made some important changes to the development of ring binders in Stuttgart. [4]
The 3:1 pitch hole pattern is most commonly used for binding small documents with double loop wire. Spines are available in sizes between 4.8 mm (3 ⁄ 16 in) and 14 mm (9 ⁄ 16 in) in diameter. The hole pattern can use either square or round holes.
To bind a document, the user first punches holes in the paper with a specialized hole punch. Pages must be punched a few at a time with most of these machines. If hard covers are desired, they must be punched as well. In bulk applications, a paper drilling machine may be used. Then the user chooses a spine size that will match the document.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
“Omega-3 fatty acids reduce inflammation, lower blood pressure and decrease triglycerides, key ingredients for optimum cardiovascular health,” says Patricia Bannan, M.S., RDN, author of From ...
Ads
related to: expandable 3 hole binders