Patent US2011647A successfully refreshed from Google Patents.
US2011647A
Expired / Lapsed
US
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Tube cooling device
Assignee: Westinghouse Electric Corp
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Filing: 1932-07-30
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Granted: 1935-08-20
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Expires: 1952-07-30
Abstract
No abstract record available.
Inventors
- 👤 Ilia E Mouromtsell
- 👤 Harrell V Noble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:03
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/32; H01J19/36; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0027; Y; Y10; Y10S; Y10S165/00; Y10S165/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-08-19 | 1939-02-18 | 1939-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-08-19 | 1943-02-18 | 1943-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-08-19 | 1947-02-18 | 1947-08-20 | $7700.00 | Window Closed / Lapsed |