US297703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for constructing artificial tooth-crowns
Assignee: —
•
Filing: —
•
Granted: 1884-04-29
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Expires: 1901-04-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:27
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/02; B21D22/04
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) | 1887-04-29 | 1887-10-29 | 1888-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-04-29 | 1891-10-29 | 1892-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-04-29 | 1895-10-29 | 1896-04-29 | $7700.00 | Window Closed / Lapsed |