US2458692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for mixing dental amalgams
Assignee: Individual
•
Filing: 1947-02-19
•
Granted: 1949-01-11
•
Expires: 1967-02-19
Abstract
No abstract record available.
Inventors
- 👤 Downer John Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:23
CPC Classifications
B; B01; B01F; B01F31/00; B01F31/20; B01F31/27; Y; Y10; Y10S; Y10S366/00; Y10S366/602
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US780142A
Cited
US1704010A
Cited
US2320252A
Cited
US2306296A
Cited
US2339092A
Cited
US2356004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |