Lay; Warren Thomas

Patent Applications and Registrations

Patent applications and USPTO patent grants for Lay; Warren Thomas.The latest application filed is for "down-the-hole drill hammer having a sliding exhaust check valve".

Company Profile

0.10.5

Lay; Warren Thomas - Catawba VA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly Grant 8,800,690 - Lyon , et al. August 12, 2	2014-08-12
Pressure reversing valve assembly for a down-the-hole percussive drilling apparatus Grant 8,631,884 - Lyon , et al. January 21, 2	2014-01-21
Down-the-hole drill hammer having a sliding exhaust check valve Grant 8,622,152 - Lyon , et al. January 7, 2	2014-01-07
Down-the-hole drill hammer having an extendable drill bit assembly Grant 8,439,135 - Lyon , et al. May 14, 2	2013-05-14
Drill bit Grant D656,974 - Lyon , et al. April 3, 2	2012-04-03
Down-the-Hole Drill Hammer Having a Sliding Exhaust Check Valve App 20120006598 - LYON; Leland H. ; et al.	2012-01-12
Pressure Reversing Valve Assembly For a Down-the-Hole Percussive Drilling Apparatus App 20110297447 - LYON; Leland H. ; et al.	2011-12-08
Down-the-hole Drill Hammer Having An Extendable Drill Bit Assembly App 20110240373 - LYON; Leland H. ; et al.	2011-10-06
Down-the-hole Drill Hammer Having A Reverse Exhaust System And Segmented Chuck Assembly App 20100059284 - LYON; Leland H. ; et al.	2010-03-11
Percussive drill with adjustable flow control Grant 6,799,641 - Lyon , et al. October 5, 2	2004-10-05
Rockbolt assembly App 20010046418 - Lay, Warren Thomas	2001-11-29

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