US4545780B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4545780B1 - - Google Patents
Assignee: M & G PATENTS Inc
•
Filing: 1983-01-10
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Granted: 1990-01-02
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Expires: 2003-01-10
Abstract
No abstract record available.
Inventors
- 👤 E Martin William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:59
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2822; B31B; B31B50/00; B31B50/14; B31B50/16; B31B50/74; B31B50/88; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4529
Claims Analysis
Total Claims: 0
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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) | 1993-01-01 | 1993-07-03 | 1994-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-01 | 1997-07-03 | 1998-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-01 | 2001-07-03 | 2002-01-02 | $7700.00 | Window Closed / Lapsed |