US2423729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporization of substances in a vacuum
Assignee: Individual
•
Filing: 1940-01-18
•
Granted: 1947-07-08
•
Expires: 1960-01-18
Abstract
No abstract record available.
Inventors
- 👤 Ruhle Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/305; H01J37/3053; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/28; C23C14/30; Y; Y10; Y10S; Y10S164/00; Y10S164/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1326794A
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US1584728A
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US1942573A
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US2123706A
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US2160714A
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US2103623A
Cited
US2047351A
Cited
GB483029A
Cited
US2097488A
Cited
US2157478A
Cited
US2153786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-07 | 1951-01-06 | 1951-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-07 | 1955-01-06 | 1955-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-07 | 1959-01-06 | 1959-07-08 | $7700.00 | Window Closed / Lapsed |