US2895189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel casting process and means for carrying out the same
Assignee: Individual
•
Filing: 1956-08-22
•
Granted: 1959-07-21
•
Expires: 1976-08-22
Abstract
No abstract record available.
Inventors
- 👤 Maertens Leopold Julien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:27
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/14; B22D11/143; B22D11/04; B22D11/045; B22D11/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US238515A
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US944668A
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US1888913A
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DE730110C
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US2176990A
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US2169893A
Cited
US2202702A
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US2316180A
Cited
US2565959A
Cited
GB718644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |