Patent US2508931A successfully refreshed from Google Patents.
US2508931A
Expired / Lapsed
US
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Brush with cemented tuft socket
Assignee: Individual
•
Filing: 1944-10-28
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Granted: 1950-05-23
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Expires: 1964-10-28
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Simms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:48
CPC Classifications
A; A46; A46B; A46B3/00; A46B3/02; A46B3/08; A46B3/10; A46B3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US429839A
Cited
US605230A
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US779016A
Cited
US944833A
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US1031584A
Cited
US1089220A
Cited
US2080821A
Cited
US2293302A
Cited
US2316870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |