US2555256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe-line pipe
Assignee: National Tube Co
•
Filing: 1948-04-14
•
Granted: 1951-05-29
•
Expires: 1968-04-14
Abstract
No abstract record available.
Inventors
- 👤 John D Tyson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:29
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/02; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/477; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958; Y10T428/12965
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2308307A
Cited
US2396704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |