Luminex has a razor blade business model, just like 3-D, where it sells the machine and once you buy the machine you have to buy the consumables, or the razors, that run through it.

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After a stretch in private practice, Bernstein landed a job with the FTC in 1970, where she impressed Pitofsky by bringing a case against a razor-blade company distributing samples in a newspaper's Sunday comics section.

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Incredibly, to carve the egg, he uses a reshaped razor blade.

BBC: The new 'Australian made'

The presence of low-cost competition from generic products gives Gillette an incentive to innovate and introduce better products such as Fusion, a 6 blade razor.

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When a server breaks, Google junks it, just like an old razor blade, and slips in a replacement.

FORBES: The Cheap Decade

The significant attraction to companies producing glucose monitoring devices is that the business model is a classic razor-and-blade concept as an overwhelming portion of sales by these companies consists of the recurring test strips.

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For a second year a band of unhappy shareholders, led by Boston's Walden Asset Management and including a number of religious groups, organized a revolt against the way razor blade giant Gillette elects its directors and manages its affairs.

FORBES: So That's Where My Proxy Goes

The writings were on a yellow legal pad found underneath Keyes, who slit his wrist Dec. 2 in his Anchorage jail cell using the blade of a disposable razor that he had embedded in a pencil.

WSJ: Alaska killer's writings include disturbing poetry

Two days after the Massachusetts indictment was announced, Amy, in jail in Alabama, popped the blade out of a safety razor and slashed her wrists.

NEWYORKER: A Loaded Gun