US2856938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cleaners
Assignee: Individual
•
Filing: 1954-10-08
•
Granted: 1958-10-21
•
Expires: 1974-10-08
Abstract
No abstract record available.
Inventors
- 👤 Fleming Margaret Ellen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:15
CPC Classifications
A; A61; A61C; A61C15/00; A61C15/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1682178A
Cited
US725081A
Cited
US872908A
Cited
US973842A
Cited
US1149376A
Cited
US1555111A
Cited
US1462062A
Cited
US1617945A
Cited
US1581501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |