US2442033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid circulating dental drill and bit
Assignee: Individual
•
Filing: 1945-07-28
•
Granted: 1948-05-25
•
Expires: 1965-07-28
Abstract
No abstract record available.
Inventors
- 👤 John E Brantly
- 👤 Malcolm B Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/05; A61C1/052; A61C1/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US189409A
Cited
US1039728A
Cited
GB191411512A
Cited
US1539637A
Cited
DE430111C
Cited
GB391437A
Cited
US2124831A
Cited
US2226145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |