US2808800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Group burning fixture
Assignee: Individual
•
Filing: 1952-03-07
•
Granted: 1957-10-08
•
Expires: 1972-03-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Winkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:25
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/531; H01M50/54; H01M50/541; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S164/00; Y10S164/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US871393A
Cited
US1960195A
Cited
US1932136A
Cited
US2430188A
Cited
US2505514A
Cited
US2745367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |