Damage-resistant mechanical metronome
Decimal single time-unit counter
Defrost bimetal for interrupting time cycle ice maker during...
Defrost circuit for refrigerator
Defrost timer having selectable defrost time
Determination of parameters of an autocorrelation function
Devious game piece timer
Digital low-power programmable alarm clock for use with...
Digital pulsing visual metronome
Double vernier time interval measurement using triggered...
Dual speed gated counter