Patent US2791804A successfully refreshed from Google Patents.
US2791804A
Expired / Lapsed
US
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Method and apparatus for forming powder metal parts having undercuts or the like
Assignee: Individual
•
Filing: 1953-01-07
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Granted: 1957-05-14
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Expires: 1973-01-07
Abstract
No abstract record available.
Inventors
- 👤 Talmage Charles Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:30
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US400415A
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US760446A
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US1386003A
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US1396779A
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US2152738A
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US2326381A
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US2350971A
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US2449407A
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US2499530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |