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US2667558A
Expired / Lapsed
US
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Upsetting of electrically heated rods
Assignee: Maschinenfabrik Hasenclever AG
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Filing: 1952-03-29
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Granted: 1954-01-26
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Expires: 1972-03-29
Abstract
No abstract record available.
Inventors
- 👤 Aeckersberg Gustav
- 👤 Nilgen Karl Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:57
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/02; B21J9/06; B21J9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB247602A
Cited
US2581774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |