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Patent US2821756A successfully refreshed from Google Patents.
US2821756A
Expired / Lapsed
US
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Die casting apparatus
Assignee: Individual
•
Filing: 1954-10-14
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Granted: 1958-02-04
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Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 Harry E Pouell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:41
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US666075A
Cited
US1956870A
Cited
US1975966A
Cited
US2332856A
Cited
US2579951A
Cited
US2494777A
Cited
US2635310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |