US2544598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal casting mold
Assignee: WETHERILL ENGINEERING Co
•
Filing: 1948-02-28
•
Granted: 1951-03-06
•
Expires: 1968-02-28
Abstract
No abstract record available.
Inventors
- 👤 Martin H Kalina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
B; B22; B22D; B22D18/00; B22D18/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1555626A
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US1550685A
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US1634999A
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US1883382A
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US1956552A
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US2023833A
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US2266734A
Cited
US2379401A
Cited
US2411862A
Cited
US2428659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |