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Patent US2872832A successfully refreshed from Google Patents.
US2872832A
Expired / Lapsed
US
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Plural workpiece forging machines
Assignee: Appel Process Ltd
•
Filing: 1956-11-15
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Granted: 1959-02-10
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Expires: 1976-11-15
Abstract
No abstract record available.
Inventors
- 👤 Gerhard H Appel
- 👤 Tlaker Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:42
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/02; B21J7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE507236A
Cited
US431041A
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US1319838A
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US629838A
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GB127920A
Cited
US1819376A
Cited
BE517671A
Cited
DE934137C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |