US2686345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundry mold-making machine
Assignee: Spo Inc
•
Filing: 1950-06-08
•
Granted: 1954-08-17
•
Expires: 1970-06-08
Abstract
No abstract record available.
Inventors
- 👤 Lester C Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:51
CPC Classifications
B; B22; B22C; B22C15/00; B22C15/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1316261A
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US1768359A
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US1134398A
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US1256739A
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US1343335A
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US1512721A
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US1752175A
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US1814416A
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US1748124A
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US2012478A
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US2160581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |