Tubular access ladder and method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9863187
SERIAL NO

13735554

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An access ladder includes a plurality of sections connected together to telescope between an extended position and a retracted position that has an increasing reactive force to counterbalance the weight of the sections as they extend. A method for accessing a room with a ladder connected to a ceiling including the steps of moving the ladder to a fully extended position subject to an increasingly active force to counterbalance the weight of the ladder as it extends. There is the step of retracting the ladder into a retracted position in the ceiling.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
WERNER COGREENVILLE PA 16125-9499

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Parker, Thomas W Jamestown, US 84 892

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jul 9, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 9, 2029
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00