US4539586B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4539586B1 - - Google Patents
Assignee: Welch Allyn Inc
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Filing: 1983-10-07
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Granted: 1991-12-17
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Expires: 2003-10-07
Abstract
No abstract record available.
Inventors
- 👤 Danna Dominick
- 👤 C Wheeler Robert
- 👤 R English Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:46
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04; A61B1/05; A61B1/00112; A61B1/00121
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) | 1994-12-16 | 1995-06-17 | 1995-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-16 | 1999-06-17 | 1999-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-16 | 2003-06-17 | 2003-12-17 | $7700.00 | Window Closed / Lapsed |