US2524929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric method and apparatus for testing vacuum conditions in containers
Assignee: WM S SCULL Co
•
Filing: 1946-02-21
•
Granted: 1950-10-10
•
Expires: 1966-02-21
Abstract
No abstract record available.
Inventors
- 👤 Razek Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:18
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/3404
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1766019A
Cited
US2027595A
Cited
GB405243A
Cited
US2067262A
Cited
US2164576A
Cited
US2142920A
Cited
US2280948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |