US2613015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded tank construction
Assignee: AO Smith Corp
•
Filing: 1948-03-29
•
Granted: 1952-10-07
•
Expires: 1968-03-29
Abstract
No abstract record available.
Inventors
- 👤 Keating Leonard Mathew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:42
CPC Classifications
B; B21; B21D; B21D51/00; Y; Y10; Y10S; Y10S220/00; Y10S220/29; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/49945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1298968A
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US1282797A
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US2263021A
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US2290903A
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US2350720A
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US2348696A
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US2444833A
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US2480376A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |