US2674247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-pressure teeth cleaner
Assignee: Individual
•
Filing: 1952-03-06
•
Granted: 1954-04-06
•
Expires: 1972-03-06
Abstract
No abstract record available.
Inventors
- 👤 Mclellan Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:25
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/02; A61C17/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US757907A
Cited
US826188A
Cited
US1576128A
Cited
US1494809A
Cited
US2342940A
Cited
FR919248A
Cited
US2511469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |