Spencer; Douglas A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Spencer; Douglas A..The latest application filed is for "portable swing seat".
- Spencer; Douglas A. - Williamsburg MI
- Spencer; Douglas A. - Sparta MI
- Spencer; Douglas A. - Boulder CO
| Patent | Date |
|---|---|
| Pipe stress detection tool using magnetic barkhausen noise Grant 8,035,374 - Girrell , et al. October 11, 2 | 2011-10-11 |
| Portable Swing Seat App 20110241397 - Spencer; Douglas A. | 2011-10-06 |
| Comprehensive echo control system Grant 7,180,869 - Spencer February 20, 2 | 2007-02-20 |
| Integration of remote access and service Grant 6,674,853 - Ezell , et al. January 6, 2 | 2004-01-06 |
| Secure data authentication apparatus App 20030120923 - Gilman, Robert R. ; et al. | 2003-06-26 |
| Call classification by automatic recognition of speech App 20030088403 - Chan, Norman C. ; et al. | 2003-05-08 |
| Multi-detector call classifier App 20030081756 - Chan, Norman C. ; et al. | 2003-05-01 |
| Comprehensive echo control system App 20030043783 - Spencer, Douglas A. | 2003-03-06 |
| Switch distribution via an intermediary switching network Grant 5,982,783 - Frey , et al. November 9, 1 | 1999-11-09 |
| Wireless access telephone-to-telephone network interface architecture Grant 5,305,308 - English , et al. April 19, 1 | 1994-04-19 |
| Mobile telephone system call processing arrangement Grant 5,278,892 - Bolliger , et al. January 11, 1 | 1994-01-11 |
| Adaptive synchronization arrangement Grant 5,195,091 - Farwell , et al. March 16, 1 | 1993-03-16 |
| Wireless access telephone-to-telephone network interface architecture Grant 5,195,090 - Bolliger , et al. March 16, 1 | 1993-03-16 |
| Adaptive synchronization arrangement Grant 5,184,347 - Farwell , et al. February 2, 1 | 1993-02-02 |
| Fast packetized data delivery for digital networks Grant 4,894,822 - Buhrke , et al. January 16, 1 | 1990-01-16 |
| Time slot assignment facilities Grant 4,510,596 - Hartmann , et al. April 9, 1 | 1985-04-09 |
| Establishing and supporting data traffic in private branch exchanges Grant 4,488,294 - Christensen , et al. December 11, 1 | 1984-12-11 |
| Digital switching over PAM bus system Grant 4,398,287 - Spencer August 9, 1 | 1983-08-09 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 