US2691345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion precipitronic process and apparatus
Assignee: Huebner Co
•
Filing: 1949-02-05
•
Granted: 1954-10-12
•
Expires: 1969-02-05
Abstract
No abstract record available.
Inventors
- 👤 William C Huebner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:26
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/34; G03G15/344; G03G15/348; G03G15/06; G03G15/08; G03G15/0803; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/225; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
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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) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |