Call

Connect with us for legal assistance

+1 (877) 794-9511

Email

Need help? Drop us an email

Whatsapp

Need a quick help? Leave us a message

Services

Trademarks

Protect your brand today

Register your Trademark

Trademark Registration

Free Trademark Search

Comprehensive Search

International Trademarks

Post Filing Services

Trademark Renewal

Trademark Revival

Trademark Office Actions

Trademark Statement of Use

Trademark Oppositions

Trademark Litigations

Trademark Protection

Brand Monitoring

Trademark Ownership Transfer

Cease and Desist Letter

Patents

File a patent today

Start a Patent Application

File a Provisional Patent

For temporary protection upto 1 year from USPTO

File a Design Patent

Protects invention’s design and visual aspects

File a Utility Patent

Protects new machines, methods, processes of the invention

Additional Patent Services

Expedited Design Patent

Best for faster and efficient protection for your design inventions

Accelerated Utility Patent

Quickly file patent applications for your ideas and inventions

International Patents (PCT)

Protect your ideas and inventions globally

Copyrights

Safeguard your creative ideas

Start a Copyright Application

Register your Copyright

Protect your work or creations with us

Free Copyright Search

Search through 33 Million+ Copyright records

Copyright Owner Search

Browse through the owners of copyrights registered

Search Copyright by Category

Browse through different categories of copyright works

Business

Incorporate your business today

Start a Business

Popular option for business owners

Form a C Corporation

Best for big business establishments

Form a S Corporation

For growing businesses to save taxes

Form a Non Profit

For business focused on helping the world

Legal Forms for Business

Real Estate Forms

Family and Personal Forms

Legal Forms Directory

Resources

Tools to assist you with IP Protection

Legal answers made simple

Know the latest industry news on IP Law

Support

Discover our story and mission

Connect with us today

Attorneys Pricing

Call

Connect with us for legal assistance

+1 (877) 794-9511

Email

Need help? Drop us an email

Whatsapp

Need a quick help? Leave us a message

Guest

Monitor this mark

View On USPTO

DUO-FLOW

Dead/Expired
EXPIRED

on 03 Nov 1992

Last Applicant/ Owned by

FLOW LABORATORIES INCORPORATED

12601 TWINBROOK PARKWAY

ROCKVILLE

MD

20852

Serial Number

72280223 filed on 13^th Sep 1967

Registration Number

847166 registered on 02^th Apr 1968

in the Principal Register

Correspondent Address

Filing Basis

1. use application currently

Disclaimer

NO DATA

DUO-FLOW

STERILE, GERMICIDAL CLEANING AND STORAGE SOLUTION FOR CONTACT LENSES

Classification Information

Information not provided

Mark Details

Serial Number

No 72280223

Mark Type

No Service/Collective Mark

Attorney Docket Number

No

44D Filed

No

44D Current

No

44E filed

No

44E Current

No

66A Filed

No

66A Current

No

Current Basis

No

No Basis

No

Legal History

Status Date	Action Taken
03^rd Nov 1992	EXPIRED SEC. 9