US2753428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for butt welding pipe sections
Assignee: Individual
•
Filing: 1953-06-05
•
Granted: 1956-07-03
•
Expires: 1973-06-05
Abstract
No abstract record available.
Inventors
- 👤 Graham Lattrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:38
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/14; B23K9/142; B23K9/145; B23K33/00; B23K33/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1041525A
Cited
US1972029A
Cited
US2009240A
Cited
US2146601A
Cited
US2220576A
Cited
US2269369A
Cited
US2347914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |