Patent US3670672A successfully refreshed from Google Patents.
US5711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in surgical or dental operating-chairs
Assignee: —
•
Filing: —
•
Granted: 1848-08-15
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Expires: 1865-08-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:45
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/025; A47C3/0255; A47C7/00; A47C7/50; A47C7/506; A47D; A47D1/00; A47D1/002; A61; A61G; A61G15/00; A61G15/002
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) | 1851-08-15 | 1852-02-14 | 1852-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1855-08-15 | 1856-02-14 | 1856-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1859-08-15 | 1860-02-14 | 1860-08-15 | $7700.00 | Window Closed / Lapsed |