US2852246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum degassing apparatus
Assignee: Individual
•
Filing: 1956-02-27
•
Granted: 1958-09-16
•
Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 Janco Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10; B; B22; B22D; B22D27/00; B22D27/15; F; F27; F27B; F27B5/00; F27B5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2253421A
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US2766110A
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US2587793A
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US2723428A
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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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |