US2811747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal casting machines
Assignee: Individual
•
Filing: 1953-06-15
•
Granted: 1957-11-05
•
Expires: 1973-06-15
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Belz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:19
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/20; B22; B22D; B22D13/00; B29; B29C; B29C41/00; B29C41/02; B29C41/04; B29C41/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US765570A
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US803799A
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US1812242A
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US1998897A
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US2428434A
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US2469892A
Cited
US2659107A
Cited
US2583955A
Cited
US2624072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |