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David H Levy: Keypads and key switches. Digit Wireless, Fish & Richardson P C, June 28, 2005: US06911608 (56 worldwide citation)

A keypad with both elevated and non-elevated key regions, and key switches disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated key region as we ...


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Levy David H: Blocs numeriques et commutateurs a cle, Keypads and key switches. Digit Wireless, Digit Wireless, SMART & BIGGAR, December 4, 2003: CA2479052

A keypad with both elevated (11) and non-elevated (22) key regions, and key switches (12) disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated k ...


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Leyy David H: Keypads and key switches. Digit Wireless, March 2, 2005: EP1509938-A1

A keypad with both elevated (11) and non-elevated (22) key regions, and key switches (12) disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated k ...


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David H Levy: Keypads and key switches. Fish & Richardson PC, February 19, 2004: US20040031673-A1

A keypad with both elevated and non-elevated key regions, and key switches disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated key region as we ...


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David H Levy: Keypads and key switches. Fish & Richardson PC, June 30, 2005: US20050139457-A1

A keypad with both elevated and non-elevated key regions, and key switches disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated key region as we ...


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David H Levy: Keypads and key switches. Digit Wireless a Massachusetts corporation, Fish & Richardson PC, April 13, 2006: US20060076219-A1

A keypad with both elevated and non-elevated key regions, and key switches disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated key region as we ...


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Leyy David H: Keypads and key switches. Digit Wireless, Leyy David H, BABINEAU James W, December 4, 2003: WO/2003/100804

A keypad with both elevated (11) and non-elevated (22) key regions, and key switches (12) disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated k ...


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Levy David H: Keypads and key switches. Digit Wireless, che wen gu gongxia, August 31, 2005: CN03813996

A keypad with both elevated (11) and non-elevated (22) key regions, and key switches (12) disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated k ...


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Leyy David H: Keypads and key switches. Digit Wireless, December 31, 2004: KR1020047018979

A keypad with both elevated (11) and non- elevated (22) key regions, and key switches (12) disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated ...


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