US4761968B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4761968B1 - - Google Patents
Assignee: Pioneer Air Systems Inc
•
Filing: 1987-10-13
•
Granted: 1991-09-17
•
Expires: 2007-10-13
Abstract
No abstract record available.
Inventors
- 👤 K Basseen Sanjiv
- 👤 A Harlan Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:52
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; F; F16; F16L; F16L55/00; F16L55/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |