US3330901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron bombardment melting furnace
Assignee: Lokomotivbau Elektrotechnische Werke Hans Beimler VEB
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Filing: 1964-03-25
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Granted: 1967-07-11
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Expires: 1984-03-25
Abstract
No abstract record available.
Inventors
- 👤 Ardenne Manfred Von
- 👤 Schiller Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:06
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |