| ReturnTo Theme-Group-Choice | Onelevelup |
| 2F081 | Measurement of predetermined time intervals | |
| G04F1/00 -5/16 | ||
| G04F3/00-3/08 | AA | AA00 PURPOSE |
AA01 | AA02 | AA03 | AA04 | ||||||
| . Inspection and testing | . Combined use of parts and circuits | . Integrated circuits | . Prevention of improper motion | |||||||||
| BB | BB00 POWER SOURCES |
BB01 | BB02 | |||||||||
| . Power-source circuits | . . Compensation for power outages | |||||||||||
| CC | CC00 MEANS OF INDICATION |
CC01 | CC02 | CC03 | CC04 | CC05 | CC06 | CC07 | CC08 | CC09 | CC10 | |
| . Optical-indication means | . . Optical elements | . . . Lamps | . Acoustic-indication means | . . Voice | . . Bells | . Indication hands | . Number wheels | . Scales | . Marks | |||
| CC11 | CC12 | CC13 | CC14 | CC15 | CC16 | CC17 | CC18 | CC19 | CC20 | |||
| . Printing and painting | . Digital indication means | . Analog indication means | . . Belts | . Indication of time set | . Indication of time remaining | . Indication of projected time | . Indication of time units | . Different indication means | . Indication switching | |||
| DD | DD00 ADDITIONAL FUNCTIONS AND USES |
DD01 | DD02 | DD03 | DD04 | DD06 | ||||||
| . Watches | . . Electric watches | . . Electronic watches | . Game watches | . Radios | ||||||||
| EE | EE00 TIMER DRIVE MECHANISMS |
EE01 | EE02 | EE03 | EE04 | EE05 | EE06 | EE07 | EE08 | EE09 | EE10 | |
| . Springs | . . Power springs | . . Fluid body systems | . Motors | . Electromagnetic solenoids | . Pulse counters | . Cell-relay (CR) timers | . Electro-chemical means | . Bimetals | . Gear functions | |||
| FF | FF00 TIMER SETTING |
FF01 | FF02 | FF03 | FF04 | FF05 | FF06 | FF07 | ||||
| . Members for setting | . . Members that operate by rotation | . . Members that do not operate by rotation | . . Derived settings | . . Codes or sheets | . . Switching members | . . . Key switches | ||||||
| FF11 | FF12 | FF13 | FF14 | FF15 | FF16 | FF18 | ||||||
| . Methods of setting | . . Oscillator control | . . Canges to subharmonic output | . . Selection of multiple fixed time intervals | . . Pulse setting | . . Presetting | . . Independent setting of digits | ||||||
| GG | GG00 TIMER CONTROL |
GG01 | GG02 | GG03 | GG04 | GG05 | GG07 | GG08 | GG09 | GG10 | ||
| . Division of a single fixed time interval | . Continuous division of single fixed time intervals | . Continuous division of multiple fixed time intervals | . Independent division of multiple fixed time intervals | . Control of multiple loads | . Control of irregular timers speeds | . Mechanisms for returning to zero | . Starting mechanisms | . Stopping mechanisms | ||||
| HH | HH00 TIME-DETECTION MEANS |
HH01 | HH02 | HH03 | HH04 | HH05 | HH06 | HH07 | HH08 | HH09 | HH10 | |
| . Counter output | . Switches | . . Rotating plates that serve as connecting points | . . Code switches | . Working cams | . Working levers | . Gear mechanisms | . . Specific gears | . . Movement in the direction axial to the gear | . Use of perforations | |||
| JJ | JJ00 TIMER CIRCUITS |
JJ01 | JJ02 | JJ03 | JJ04 | JJ05 | JJ06 | |||||
| . Memory circuits | . . Read-only memory (ROM) and random access memory (RAM) | . Counters | . . Reduction counters | . Comparison circuits | . Central processing unit (CPU) control |