US3611573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amalgamator
Assignee: Individual
•
Filing: 1969-07-28
•
Granted: 1971-10-12
•
Expires: 1989-07-28
Abstract
Abstract A MANUALLY ENGAGEABLE AND MANIPULATABLE DEVICE FOR TRITURATING DENTAL AMALGAMS WHICH INCLUDES A PUGMILL WITH A HELICAL ROTOR IN A CHAMBER WITH A CENTRAL DISCHARGE OPENING AT ONE END OF AN A MANUALLY OPERABLE, AXIALLY SHIFTABLE VALVING AND PLUNGER MEMBER CARRIED BY THE ROTOR TO NORMAL PROJECT INTO AND CLOSE THE OPENING TO CAUSE CONTINOUS MIXING OF THE INGREDIENTS, SHIFTABLE FROM SAID OPENING TO PERMIT FLOW INGREDIENTS INTO THE OPENING AND SHIFTABLE BACK INTO AND THROUGH THE OPENING TO DIS PENSE THE INGREDIENTS.
Inventors
- 👤 Don L Crawford
- 👤 Georges A Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:22
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00593; A; A61; A61C; A61C5/00; A61C5/60; A61C5/62; B05C17/00503; B05C17/00516
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |