US1235857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making dental restorations.
Assignee: Individual
•
Filing: 1913-12-18
•
Granted: 1917-08-07
•
Expires: 1933-12-18
Abstract
No abstract record available.
Inventors
- 👤 Robert W Sweetnam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
B; B22; B22D; B22D18/00; B22D18/06; Y; Y10; Y10S; Y10S164/00; Y10S164/04
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) | 1920-08-06 | 1921-02-05 | 1921-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-08-06 | 1925-02-05 | 1925-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-08-06 | 1929-02-05 | 1929-08-07 | $7700.00 | Window Closed / Lapsed |