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Telephone and Telegraph Apparatus

SIC Industry 3661 — NAICS² Industries 334210& 334418

SIC [1987] Manufacturing Electronic & Other Electric Equipment Communications Equipment Telephone & telegraph apparatus §



295 Registrants · List them ordered by how Active they have been



As OfNameLatest Filings SIC
(Latest)
In ascending orderAs Filer As Issuer
Active (in the Past Year, since 1/28/19) in Industry 3661:
1/22/20
AL
Adtran Inc 10-Q 4 New Filing this Past Week!3661
1/10/20
NC
Akoustis Technologies, Inc. [formerly Danlax, Corp.] S-8 43661
8:12aET
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Audiocodes Ltd 6-K New Filing this Past Week! SC 13G/A New Filing this Past Week!3661
1/17/20
CA
Avaya Holdings Corp. [formerly Sierra Holdings Corp] DEF 14A SC 13G/A3661
5:05pET
MD
Ciena Corp 8-K New Filing this Past Week! 4 New Filing this Past Week!3661
1/27/20
MN
Clearfield, Inc. [formerly APA Enterprises, Inc.] 8-K New Filing this Past Week! 43661
1/3/20
UT
Clearone Inc [formerly Clearone Communications Inc] 8-K 53661
5:22pET
MN
Communications Systems Inc 10-Q SC 13D/A New Filing this Past Week!3661
1/6/20
CA
Dasan Zhone Solutions Inc [formerly Zhone Technologies Inc] 8-K 43661
1/6/20
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Fabrinet 8-K 43661
12/31/19
CA
Franklin Wireless Corp [formerly Franklin Telecommunications Corp] 8-K SC 13G/A3661
5:18pET
IL
Gustafsson Anders 4 New Filing this Past Week!3661
1/8/20
CA
Infinera Corp [formerly Zepton Networks Inc] 8-K 43661
12/18/19
DE
Kourey Michael R 43661
1/8/20
Flag of Israel emoji
Mer Telemanagement Solutions Ltd 6-K SC 13G/A3661
1/9/20
CA
Netgear, Inc. 8-K 43661
1/3/20
IL
Notebaert Richard C 43661
1/22/20
CA
Plantronics Inc/CA [formerly Pi Parent Corp] 8-K New Filing this Past Week! 3 New Filing this Past Week!3661
1/17/20
CA
Sonim Technologies Inc 8-K 43661
1/8/20
CA
Sunworks, Inc. [formerly SOLAR3D, Inc.] 8-K 43661
More... Please Sign In to list all of them.



Businesses & Products of SIC Industry 3661
  • Autotransformers for telephone switchboards
  • Carrier equipment, telephone and telegraph
  • Communication headgear, telephone
  • Data sets, telephone and telegraph
  • Facsimile equipment
  • Headsets, telephone
  • Message concentrators
  • Modems
  • Multiplex equipment, telephone and telegraph
  • PBX equipment, manual and automatic
  • Switchboards, telephone and telegraph
  • Switching equipment, telephone
  • Telegraph office switching equipment
  • Telephone answering machines
  • Telephone central office equipment, dial and manual
  • Telephone dialing devices, automatic
  • Telephone sets, except cellular radio telephone
  • Telephone station equipment and parts, wire
  • Telephones, sound powered (no battery)
  • Telephones, underwater
  • Toll switching equipment, telephone


Description of SIC Industry 3661 — Telephone and Telegraph Apparatus §
Establishments primarily engaged in manufacturing wire telephone and telegraph equipment. Included are establishments manufacturing modems and other telephone and telegraph communications interface equipment. Establishments primarily engaged in manufacturing cellular radio telephones are classified in Industry 3663.


§ SEC Review Office (RO) Assigned Filings-Review Responsibility

OM – OfficeofManufacturing


² North American Industry Classification System (NAICS)

SIC [1987] Industry 3661 ⇒ NAICS [2012] Industry Codes

NAICS Code N.A. Industry [2012] SIC Codes
In ascending order
334210Telephone Apparatus Manufacturing3661
334418Printed Circuit Assembly (Electronic Assembly) Manufacturing3577, 3661, 3679
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