Con/Span Bridge Systems Ltd.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Con/Span Bridge Systems Ltd..The latest application filed is for "open bottom fiber reinforced precast concrete arch unit".
- Con/Span Bridge Systems Ltd. -
- Con/Span Bridge Systems Ltd. - Dayton OH
- Con/Span Bridge Systems Ltd - Dayton OH
Trademarks
| Patent | Date |
|---|---|
| Open bottom fiber reinforced precast concrete arch unit App 20060201091 - Lockwood; William D. ; et al. | 2006-09-14 |
| Precast concrete retaining wall Grant 7,001,110 - Lockwood February 21, 2 | 2006-02-21 |
| Concrete bridge and headwall unit Grant D514,706 - Beach February 7, 2 | 2006-02-07 |
| Concrete bridge and headwall unit Grant D512,513 - Wasniak , et al. December 6, 2 | 2005-12-06 |
| Concrete bridge unit with integral footers Grant D511,387 - Beach November 8, 2 | 2005-11-08 |
| Method for improving the environment within soil embedded culvert and bridge systems Grant 6,962,465 - Zax , et al. November 8, 2 | 2005-11-08 |
| Precast concrete bridge unit Grant D511,215 - Vaia November 1, 2 | 2005-11-01 |
| Precast concrete retaining wall App 20050191130 - Lockwood, William D. | 2005-09-01 |
| Method for improving the environment within soil embedded culvert and bridge systems App 20050123354 - Zax, Edward H. ; et al. | 2005-06-09 |
| Precast concrete culvert system Grant 6,854,928 - Lockwood February 15, 2 | 2005-02-15 |
| Concrete tunnel for a rapid transit train Grant D490,533 - Lockwood May 25, 2 | 2004-05-25 |
| Concrete tunnel for a rapid transit train Grant D484,610 - Lockwood December 30, 2 | 2003-12-30 |
| Precast concrete culvert system App 20030143029 - Lockwood, William D. | 2003-07-31 |
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