What are the best defunct products and overlooked innovations?
by from on (#6BYND)
The long-running series in which readers answer other readers' questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts
What are the best defunct products and overlooked innovations? Brian Phipps, Sheffield
Post your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published next Sunday.
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