Patent US2500306A successfully refreshed from Google Patents.
US2500306A
Expired / Lapsed
US
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Fountain brush and attachment therefor
Assignee: Individual
•
Filing: 1946-06-19
•
Granted: 1950-03-14
•
Expires: 1966-06-19
Abstract
No abstract record available.
Inventors
- 👤 Brodsky Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:26
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/06; A46B11/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325200A
Cited
GB191205998A
Cited
GB240179A
Cited
US1716980A
Cited
US2041173A
Cited
US2206208A
Cited
US2388605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |