BBB Accredited Business Profile

Proto-1 Manufacturing, L.L.C.

Proto-1 Manufacturing, L.L.C.

(920) 582-4491

Proto-1 Manufacturing, L.L.C.

21 years in business
10 Tower Dr
Winneconne, WI 54986-8530
Fax Numbers
  • (920) 582-4492
Additional Email Addresses
BBB File Opened: 12/17/1998
Business Started: 01/01/1997
Business Started Locally: 01/01/1997
Business Incorporated: 12/17/1996 in WI
Type of Entity
Limited Liability Company (LLC)
Contact Information
  • Principal: Mr. John P. Schwochert, President
  • Ms. Valerie R. Schwochert, Vice President
Business Category
  • Tube Bending
  • Machine Shop
  • Metal Finishers Supplies
  • Tube Fittings
  • Tube Cleaning

Alternate Business Names
  • Proto 1 Manufacturing
BBB accredited business



This company is a manufacturer specializing in tube end forming, tube cutoff, tube deburring, and tube expanding as well as custom automation services. 

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BBB Reason for Ratings

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BBB reports on known significant government actions involving the business's marketplace conduct.
BBB reports on a company that is out of business for one year from the date the company closes its doors or ceases to do business.
BBB reports on unauthorized use of the Better Business Bureau's name and/or logo for as long as the business continues to use it in any advertising, or for one year after the business ceases any repeated unauthorized uses.
BBB reports on a business’s bankruptcy as long as the business remains in bankruptcy.
BBB reports when mail sent to the business was returned by the Postal Service.

Proto-1 Manufacturing, L.L.C.

Proto-1 Manufacturing, L.L.C.


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