Patent US2429673A successfully refreshed from Google Patents.
Patent US2620528A successfully refreshed from Google Patents.
US2620528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die casting machine
Assignee: Individual
•
Filing: 1948-11-30
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Granted: 1952-12-09
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Expires: 1968-11-30
Abstract
No abstract record available.
Inventors
- 👤 Sternberg Jaime De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:43
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/08; B22D17/10; B22D17/20; B22D17/32
Claims Analysis
Total Claims: 0
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US2397512A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |