John F. Castagna

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Brooklyn, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Tower-type speaker cabinet with pivoted plural speaker subassembly
- Patent number 4,884,655
- Issue date Dec 5, 1989
- Sparkomatic Corporation
- Tommyca Freadman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker
- Patent number D304586
- Issue date Nov 14, 1989
- Sparkomatic Corporation
- Tommyca Freadman
- D14 - Recording, communication, or information retrieval equipment
Information Patent Grant
Grille covered speaker mounting assembly for automobile decks and t...
- Patent number 4,331,841
- Issue date May 25, 1982
- Sparkomaric Corporation
- John F. Castagna
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Grille covered speaker assembly construction for compact automobile...
- Patent number 4,281,224
- Issue date Jul 28, 1981
- Sparkomatic Corporation
- John F. Castagna
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Response tracer audio equalizer amplifier unit having graphic respo...
- Patent number 4,173,941
- Issue date Nov 13, 1979
- Sparkomatic Corporation
- John F. Castagna
- H03 - BASIC ELECTRONIC CIRCUITRY