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 05:15
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/001; A46B11/0017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325268A
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US1472123A
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US1552508A
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US1742157A
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US1769392A
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US1945023A
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US2107242A
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US2146847A
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US2214144A
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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 |