US1979731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling gauging machine
Assignee: National Tube Co
•
Filing: 1933-06-05
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Granted: 1934-11-06
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Expires: 1953-06-05
Abstract
No abstract record available.
Inventors
- 👤 Burge Alfred
- 👤 James T Shelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:31
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/20; G01B5/204; Y; Y10; Y10T; Y10T279/00; Y10T279/18; Y10T279/19; Y10T29/00; Y10T29/53; Y10T29/53687; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5626
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) | 1937-11-05 | 1938-05-07 | 1938-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-11-05 | 1942-05-07 | 1942-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-11-05 | 1946-05-07 | 1946-11-06 | $7700.00 | Window Closed / Lapsed |