US2707324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting and processing of cast metal articles
Assignee: Dayton Steel Foundry Co
•
Filing: 1951-07-14
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Granted: 1955-05-03
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Expires: 1971-07-14
Abstract
No abstract record available.
Inventors
- 👤 John W Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:59
CPC Classifications
B; B22; B22D; B22D31/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979; Y10T29/4998; Y10T29/49988; Y10T29/49989
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US412687A
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US427708A
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US1603471A
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US1661163A
Cited
GB330840A
Cited
US2130235A
Cited
US2137537A
Cited
US2182799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |