US2952231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weld back-up construction
Assignee: AO Smith Corp
•
Filing: 1953-03-09
•
Granted: 1960-09-13
•
Expires: 1973-03-09
Abstract
No abstract record available.
Inventors
- 👤 John J Chyle
- 👤 Michael W Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:13
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1563584A
Cited
US1748587A
Cited
US2311613A
Cited
US2331937A
Cited
US2362505A
Cited
US2331689A
Cited
US2792626A
Cited
US2820427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |