US2970719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded tank structure and method of making same
Assignee: Individual
•
Filing: 1957-05-14
•
Granted: 1961-02-07
•
Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Francis E Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/0026; B65; B65D; B65D90/00; B65D90/02; B65D90/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861; Y10T29/49863; Y10T29/49879; Y10T29/49885; Y10T29/49893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1682403A
Cited
US1499770A
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US2125324A
Cited
US2206375A
Cited
US2337049A
Cited
US2412271A
Cited
US2558360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |