US2553627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear insert for core boxes
Assignee: Eastern Clay Products Inc
•
Filing: 1949-04-08
•
Granted: 1951-05-22
•
Expires: 1969-04-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Barlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US269741A
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US1601956A
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US1761522A
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US2058257A
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US2241801A
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US2352327A
Cited
US2424736A
Cited
US2423341A
Cited
US2468672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |