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A Stamp printed in USA shows the Alexander Graham Bell Telephone Patent Application, Telephone Centenary Issue, circa 1976
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Audio Network Streamer, DAC, and Amplifier Dual Volume Unit Meters Glowing in the Dark.
Testing speakers with an acoustic dummy.
Antique electric meter with numbers in kwh for measuring the electricity consumed
Retro microphones in a row.
An old dial within the controls of a carillon device.
Metallic cubes set against an abstract background form an visually captivating display, accentuated by the glow of a yellow light on one of the cubes.
woman using an old personal computer.
Survey meter for radiography test
Old electronic device’s front panel with control knobs and switches, a utility outlet, and a connector port. Ideal for use as background
A conceptual electric car motor on dark gradient background, created in 3D. Close-up of an electric engine and its different parts.
Cancelled Stamp From The United States: Alexander Graham Bell - Telephone Centennial.
Low key black and white macro close-up of the volume knob on an old stereo, both knob and device are black, text and numbers are white
Extreme macro of a generic historic silicon wafer viewed at 10 times magnification, under a microscope. The width of the frame is 3.2mm.
Vacuum tube close-up image with several tubes. They were crucial to the development of radio, television, radar, sound recording and reproduction, long-distance telephone networks, and analog and early digital computers.
An old music-roll, used to play a piano or organ automaticly
Close-up of vintage electronic components, including vacuum tubes, in an old radio or amplifier.
Various analog photo equipment for photo printing, chemicals, photogloss: Abakan, Russia - May 17, 2023
Diagram of nodes exchanging information.
Close up vintage retro classic style old metal professional studio vocal and music recording microphone suspended with spiral round frame, blue toned
Low angle of small round metal fire alarm lamp with rusty surface on holey ceiling in fire truck. Firefighter work tools concept
A regular aviation flight recorder black box painted in orange on an isolated white studio background - 3D render
Photograph of vintage electronic board multicolored detail, viewed directly above.
Electric rectangular multi-pin connector. Tester equipment for cable.
washing machine drum
Old radio circuit printed on vintage paper electricity diagram as background for education, electricity industries. Electric radio scheme from USSR
Keys on an old typewriter. Antiquity from antiquity.Mechanical tools for writing Old time journalism
Electric car batteries in a row in repair shop.
Free Images: "bestof:Patent 3118022 - Gerhard M. Sessler James E. West - Bell labs - electroacustic transducer - foil electret condenser microphone 1962 1964 - pages 1-3.png United"
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