US2679748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube testing machine
Assignee: Hydropress Inc
•
Filing: 1950-08-05
•
Granted: 1954-06-01
•
Expires: 1970-08-05
Abstract
No abstract record available.
Inventors
- 👤 Francis J Kent
- 👤 Fred A Dussling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:30
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2846; Y; Y10; Y10S; Y10S470/00; Y10S470/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1861113A
Cited
US1972630A
Cited
US2396614A
Cited
US2426095A
Cited
US2551645A
Cited
US2497193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |