US2434256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedge-grip holder for bits
Assignee: BOWDIL CO
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Filing: 1945-06-07
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Granted: 1948-01-13
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Expires: 1965-06-07
Abstract
No abstract record available.
Inventors
- 👤 Charles L Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:08
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; E21C35/191
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |