US2707249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge gage control of vacuum systems
Assignee: RCA Corp
•
Filing: 1951-02-02
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Granted: 1955-04-26
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Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
- 👤 Helmuth F Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:11
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2013; G05D16/2026; H; H01; H01J; H01J7/00; H01J7/42; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2413760A
Cited
US2522969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |