US521257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental chair
Assignee: —
•
Filing: —
•
Granted: 1894-06-12
•
Expires: 1911-06-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:35
CPC Classifications
B; B66; B66F; B66F1/00; B66F1/02; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1553; Y10T74/1558; Y10T74/1565; Y10T74/1566; Y10T74/1568; Y10T74/1569; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19819; Y10T74/1987; Y10T74/19893; Y10T74/19898; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588; Y10T74/20594
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) | 1897-06-11 | 1897-12-11 | 1898-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1901-06-12 | 1901-12-12 | 1902-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1905-06-12 | 1905-12-12 | 1906-06-13 | $7700.00 | Window Closed / Lapsed |