Patent US503419A successfully refreshed from Google Patents.
US503419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing dental fillings
Assignee: —
•
Filing: —
•
Granted: 1893-08-15
•
Expires: 1910-08-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:41
CPC Classifications
A; A61; A61C; A61C5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1896-08-14 | 1897-02-13 | 1897-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-08-15 | 1901-02-14 | 1901-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-08-15 | 1905-02-14 | 1905-08-16 | $7700.00 | Window Closed / Lapsed |