US2485477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing nitrogen oxide in an electrical discharge apparatus
Assignee: Beazer East Inc
•
Filing: 1944-09-09
•
Granted: 1949-10-18
•
Expires: 1964-09-09
Abstract
No abstract record available.
Inventors
- 👤 William J Cotton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:02
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/203
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US578685A
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GB190412541A
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FR691099A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |