US2545814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for treating teeth and gums
Assignee: Individual
•
Filing: 1945-09-15
•
Granted: 1951-03-20
•
Expires: 1965-09-15
Abstract
No abstract record available.
Inventors
- 👤 George A Kempster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:43
CPC Classifications
A; A46; A46B; A46B9/00; A46B9/02; A46B9/04; A61; A61H; A61H13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US128840A
Cited
US411910A
Cited
US2042239A
Cited
US2059914A
Cited
US2153554A
Cited
US2154846A
Cited
US2244699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |