Patent US2519221A successfully refreshed from Google Patents.
US2519221A
Expired / Lapsed
US
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Electromagnetic and photoelectric mechanism and method for continuous tube gauging
Assignee: Individual
•
Filing: 1945-07-27
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Granted: 1950-08-15
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Expires: 1965-07-27
Abstract
No abstract record available.
Inventors
- 👤 Bogen Samuel
- 👤 Ruth D Bogen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:47
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/12; G01B7/125; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5184
Claims Analysis
Total Claims: 0
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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) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |