Patent US4484361A successfully refreshed from Google Patents.
Patent US2599658A successfully refreshed from Google Patents.
US2599658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually operated pressure feed fountain toothbrush
Assignee: Individual
•
Filing: 1946-03-01
•
Granted: 1952-06-10
•
Expires: 1966-03-01
Abstract
No abstract record available.
Inventors
- 👤 Ludwig F Perwas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:23
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/001; A46B11/0017
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1325268A
Cited
US1472123A
Cited
US1552508A
Cited
US1742157A
Cited
US1769392A
Cited
US1945023A
Cited
US2107242A
Cited
US2146847A
Cited
US2214144A
Cited
US2243774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |