US2124831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and device for cooling dental tools, such as drills or the like
Assignee: Waropa A G
•
Filing: 1935-12-23
•
Granted: 1938-07-26
•
Expires: 1955-12-23
Abstract
No abstract record available.
Inventors
- 👤 Roos Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/05; A61C1/052; Y; Y10; Y10S; Y10S29/00; Y10S29/066; Y10S62/00; Y10S62/10
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) | 1941-07-25 | 1942-01-24 | 1942-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-07-25 | 1946-01-24 | 1946-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-07-25 | 1950-01-24 | 1950-07-26 | $7700.00 | Window Closed / Lapsed |