US4511488B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4511488B1 - - Google Patents
Assignee: PENETONE Corp 74 HUDSON AVE
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Filing: 1983-12-05
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Granted: 1990-09-11
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Expires: 2003-12-05
Abstract
No abstract record available.
Inventors
- 👤 B Matta Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:00
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/18; C11D3/43
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) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |