US2945427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wiper blade attachment for screed boards
Assignee: DELBERT M COX
•
Filing: 1958-01-03
•
Granted: 1960-07-19
•
Expires: 1978-01-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Gerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:11
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1759251A
Cited
US1817161A
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US1914950A
Cited
US2187080A
Cited
US2197878A
Cited
US2194754A
Cited
US2413632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |