on 03 Nov 1992
Last Applicant/ Owned by
275 MASSACHUSETTS AVENUE
CAMBRIDGE
MA
Serial Number
71533499 filed on 22nd Aug 1947
Registration Number
531134 registered on 26th Sep 1950
Correspondent Address
Filing Basis
1. use application currently
Disclaimer
NO DATA
STANDARD UNITS OF RESISTANCE, INDUCTANCE AND CAPACITANCE FOR USE IN ELECTRIC MEASURING CIRCUITS; ELECTRICAL BRIDGE CIRCUITS OF THE DECADE, SLIDE-WIRE, DISSIPATION-FACTOR, VACUUM-TUBE-CHARACTERISTIC, CAPACITANCE, RESISTANCE AND INDUCTANCE TYPES AND ACCESSORY ELECTRIC CIRCUITS AND COMPONENTS REQUIRED FOR OPERATION WITH THE BRIDGE CIRCUITS; VOLTMETERS, OHMMETERS, D'ARSONVILLEMETERS, GALVANOMETERS, WA Read More
STANDARD UNITS OF RESISTANCE, INDUCTANCE AND CAPACITANCE FOR USE IN ELECTRIC MEASURING CIRCUITS; ELECTRICAL BRIDGE CIRCUITS OF THE DECADE, SLIDE-WIRE, DISSIPATION-FACTOR, VACUUM-TUBE-CHARACTERISTIC, CAPACITANCE, RESISTANCE AND INDUCTANCE TYPES AND ACCESSORY ELECTRIC CIRCUITS AND COMPONENTS REQUIRED FOR OPERATION WITH THE BRIDGE CIRCUITS; VOLTMETERS, OHMMETERS, D'ARSONVILLEMETERS, GALVANOMETERS, WAVEMETERS, METERS FOR MEASURING CAPACITY, IMPEDANCE, MODULATION, SOUND-LEVEL, NOISE, VIBRATION, DISTORTION, RATE, AUDIBILITY, FREQUENCY AND POWER, AND METERS OF THE HOT-WIRE, HETERODYNE AND OTHER TYPES AND ACCESSORY ELECTRIC CIRCUITS AND COMPONENTS REQUIRED FOR OPERATION WITH THE METERS; ELECTRIC INTERPOLATION APPARATUS; INDUSTRIAL ELECTRONIC STROBOSCOPIC AND OTHER INSTRUMENTS NAMELY, MOTION-PICTURE RECORDING APPARATUS AND FRAMES, CAMERAS, TRIPODS, INSTRUMENT-CARRYING CASES, LENSES AND ELECTRIC FLASH LAMPS; WAVE-FORM, VIBRATION, AND SOUND-MEASURING INSTRUMENTS AND ANALYZERS; CALIBRATION, VACUUM-TUBE AND OTHER PRECISION FORKS; VOLTAGE AND CURRENT MULTIPLIERS; SPECIAL MEASURING INSTRUMENTS FOR MAKING MEASUREMENTS AT AUDIO AND RADIO FREQUENCIES; MEASURING NET-WORKS; STANDARD-SIGNAL GENERATORS AND OSCILLATORS; OSCILLOSCOPES, GAMMA-RAY AND BETA-RAY COUNTERS; FREQUENCY STANDARDS AND MONITORS; AND RANGE-EXTENSION UNITS
01st Oct 1923
01st Oct 1923
ELECTRICAL APPARATUS NAMELY, AUDIO AND RADIO GENERATORS, OSCILLATORS, DETECTOR ASSEMBLIES AND CIRCUITS, RECTIFIERS AND DIRECT AND ALTERNATING-CURRENT AMPLIFIERS; VOLTAGE, CURRENT AND ELECTRONIC POWER-SUPPLY SYSTEMS; VIBRATION PICK-UPS FOR GENERATING VOLTAGES IN RESPONSE TO MECHANICAL VIBRATIONS; AUDIO-FREQUENCY AND RADIO-FREQUENCY TRANSFORMERS; CONNECTORS, INSULATORS, BINDING POSTS, SWITCHES, CONTACTORS, CONTACT MEMBERS, KNOBS, SOCKETS, RHEOSTATS, POTENTIOMETERS FOR USE IN RADIO AND SIMILAR APPARATUS, RESISTORS, ATTENUATORS AND VOLTAGE DIVIDERS; CAPACITORS, INDUCTORS AND CHOKES; ELECTRIC AND ELECTRONIC CONTROL BOXES AND MOTOR-SPEED CONTROL CIRCUITS; RADIO AND OTHER DIALS FOR USE ON ELECTRICAL COMPONENTS AND INSTRUMENTS; ELECTRO-MECHANICAL HUMMER OSCILLATORS; PIEZO-ELECTRIC CRYSTALS; ELECTRIC FILTERS; STORAGE AND DRYCELL BATTERIES; ELECTRIC CABLES; CATHODE-RAY TUBES; TRANSMISSIONLINE PHASE, INSERTION AND TERMINAL UNITS; AND TUNED ELECTRIC CIRCUITS FOR SUPPRESSING HARMONICS AND OTHER FREQUENCY COMPONENTS, NOISE AND HUM
01st Oct 1923
01st Oct 1923
No 71533499
No Service/Collective Mark
No
No
No
No
No
No
No
No
No
26.07.01 -
Plain diamonds with single or multiple line borders
26.07.28 -
Miscellaneous designs with overall diamond shape, including letters forming or comprising a diamond
Status Date | Action Taken |
---|---|
03rd Nov 1992 | EXPIRED SEC. 9 |
26th Sep 1970 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) |