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US2266735A
Expired / Lapsed
US
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Glow discharge oven
Assignee: Individual
•
Filing: 1940-03-11
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Granted: 1941-12-23
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Expires: 1960-03-11
Abstract
No abstract record available.
Inventors
- 👤 Berghaus Bernhard
- 👤 Burkhardt Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:55
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/32009; H01J37/32018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-12-22 | 1945-06-23 | 1945-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-22 | 1949-06-23 | 1949-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-22 | 1953-06-23 | 1953-12-23 | $7700.00 | Window Closed / Lapsed |