Patent US6021342A successfully refreshed from Google Patents.
US257215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cheek-holder
Assignee: —
•
Filing: —
•
Granted: 1882-05-02
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Expires: 1899-05-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:42
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/24
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) | 1885-05-01 | 1885-10-31 | 1886-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1889-05-01 | 1889-10-31 | 1890-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1893-05-01 | 1893-10-31 | 1894-05-02 | $7700.00 | Window Closed / Lapsed |