Issued Patents All Time
Showing 176–200 of 206 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D483095 | Pipe coupling | Ronald R. Snyder, Sr., Charles E. Wilk, Jr., Lawrence W. Thau, Jr. | 2003-12-02 |
| D482103 | Elbow coupling | Ronald R. Snyder, Sr., Charles E. Wilk, Jr., Lawrence W. Thau, Jr. | 2003-11-11 |
| D481447 | Elbow coupling | Charles E. Wilk, Jr., Lawrence W. Thau, Jr., Ronald R. Snyder, Sr. | 2003-10-28 |
| D481109 | Tee coupling | Charles E. Wilk, Jr., Lawrence W. Thau, Jr., Ronald R. Snyder, Sr. | 2003-10-21 |
| D481110 | Tee coupling | Ronald R. Snyder, Sr., Charles E. Wilk, Jr., Lawrence W. Thau, Jr. | 2003-10-21 |
| D480787 | Elbow coupling | Charles E. Wilk, Jr., Lawrence W. Thau, Jr., Ronald R. Snyder, Sr. | 2003-10-14 |
| D480786 | Tee coupling | Charles E. Wilk, Jr., Lawrence W. Thau, Jr., Ronald R. Snyder, Sr. | 2003-10-14 |
| 6626466 | Anti-mismatch or near-sized coupling segments | — | 2003-09-30 |
| 6581977 | Segmented pipe couplings employing T-bolts and improved T-bolts therefor | Dennis A. Mason, Jon Terence Stone | 2003-06-24 |
| 6499771 | Mechanical pipe coupling with toothed retainer | Ronald R. Snyder, Sr., Charles E. Wilk, Jr., Lawrence W. Thau, Jr. | 2002-12-31 |
| 6473981 | Diameter indicator for use with groove forming tools | — | 2002-11-05 |
| 6422535 | Knife gate valve | Jon Terence Stone, Torrey G. Sipos | 2002-07-23 |
| D454512 | Pipe tape measure with indicia pattern | — | 2002-03-19 |
| 6302450 | Coupling for plain end pipe | Charles W. Shultz | 2001-10-16 |
| 6286810 | Valve with cartridge | W. Ross McLennan, Richard R. Weston | 2001-09-11 |
| 6264251 | Segmented flange coupler for grooved pipe | Donald R. Kunsman | 2001-07-24 |
| 6179347 | Snap-action pipe coupling retainer with a rhomboidal cross-section | Mark J. Sewell | 2001-01-30 |
| 6170884 | Pipe coupling for plain ended pipe and for plain ended pipe attached to grooved pipe | William R. McLennan, Dennis R. Brown | 2001-01-09 |
| D423643 | Valve housing | W. Ross McLennan, Kevin J. Simko, Andrzej Domagala | 2000-04-25 |
| 5813705 | Snap-action pipe coupling retainer | — | 1998-09-29 |
| 5758909 | Rotation inhibiting quick connect connector for grooved pipe | Andrzej Domagala | 1998-06-02 |
| 5758907 | Mis-adjustment limiting segmented pipe coupling | Peter G. DeRaymond | 1998-06-02 |
| 5642907 | End fitting for sprinkler system | — | 1997-07-01 |
| 5603484 | Plastic sleeved rotary valve | Scott D. Madara | 1997-02-18 |
| 5603508 | Gasket for lateral outlet segmented pipe coupling | Vance W. Henry | 1997-02-18 |