US2530853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting
Assignee: Individual
•
Filing: 1945-06-07
•
Granted: 1950-11-21
•
Expires: 1965-06-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:31
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325004A
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US354316A
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US348105A
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US703169A
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US1243471A
Cited
US1244257A
Cited
US1238789A
Cited
US1465472A
Cited
US1976009A
Cited
US2281246A
Cited
US2289484A
Cited
US2299860A
Cited
US2434780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |