US2927231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glow discharge apparatus
Assignee: Elektrophysikalische Anstalt Bernhard Berghaus
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Filing: 1956-11-23
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Granted: 1960-03-01
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Expires: 1976-11-23
Abstract
No abstract record available.
Inventors
- 👤 Bucek Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:12
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/32009; H01J37/32018; C; C01; C01G; C01G5/00; C21; C21D; C21D1/00; C21D1/34; C21D1/38; C23; C23C; C23C8/00; C23C8/06; C23C8/36
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |