FactoryRegistry
Claim a page

Proto-1 Manufacturing, L.l.c.

10 Tower Rd, Winneconne, WI 54986

ACTIVELAST SEEN IN FEDERAL DATA SEP 2026 · 3 SOURCES

Operating signal within 12 months from two or more independent sources.

Visit websiteDirectionsGo to companyClaim this pageGet the badge
Homepage of Proto-1 Manufacturing, L.l.c.
Their homepage, crawled AUG 2026

What they make

All Other Industrial Machinery Manufacturing333248

Proto-1 Manufacturing LLC makes tube forming machines, orbital flaring machines, and custom machines. They are are used to Proto-1 Manufacturing LLC provides tube fabrication, contract machining, electrical, heat treat, engineering, and jig and fixture services. The company serves multiple manufacturing industries and has been in operation since 1997. It is an ISO 9001:2015 Certified Company.

SUMMARIZED FROM THE COMPANY’S OWN WEBSITE

CAREERS
Careers page — seen SEP 8, 2026

CERTIFICATIONS — LISTED ON THE COMPANY’S WEBSITE

  • ISO 9001

Read from this company’s own website on August 9, 2026. Nobody at the facility has confirmed it here, and FactoryRegistry has not verified these — unlike operating status, which comes from independent public records. A certificate can lapse without the website changing, so ask the facility for current ones.

Where it is

44.10557, -88.72506 · CENSUS TIGER
COUNTY
METRO AREA
ON GOOGLE MAPS

Other plants nearby

FacilityCityIndustryStatusDistance
Neenah Converting CenterNeenahSawmill, Woodworking, and Paper Machinery Manufacturing
333243
LIKELY ACTIVE21.4 KM
Pack Air Assembly INCNeenahAll Other Miscellaneous Fabricated Metal Product Manufacturing
332999
LIKELY ACTIVE21.0 KM
Voith Paper Fabric & Roll Systems INCNeenahPlastics and Rubber Products Manufacturing
326000
UNVERIFIED20.9 KM
Valmet Inc- NeenahNeenahOther Rubber Product Manufacturing
326290
LIKELY ACTIVE21.7 KM
Stowe Woodward CompanyNeenahOther Rubber Product Manufacturing
326290
UNVERIFIED22.5 KM

Every listed plant in Winnebago County

Also at this address

No other federal record shares this street address.

WHERE THIS RECORD COMES FROM — 3 FEDERAL SOURCES, 10 FIELDS

Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.

SourceEvidenceFirst seenLast seen
SAM GOVOPERATINGFEB 2026SEP 2026
COMPANY SITEOPERATINGJUL 2026AUG 2026
SBA LOANSEXISTENCEAPR 2013JAN 2015
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
FIELDSOURCESIGNAL
ADDRESS LINE1SAM GOV
CAGE CODESAM GOV
CITYSAM GOV
GEOMCENSUS GEOCODERJUL 2026
NAMESAM GOV
REGISTRATION EXPIRATIONSAM GOV
SBA LOANSBA LOANSAPR 2013
STATESAM GOV
WEBSITESAM GOV
YEAR ESTABLISHEDSITE YEARAUG 2026

Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Report a correction · Request removal