Patent US2804836A successfully refreshed from Google Patents.
US2804836A
Expired / Lapsed
US
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Internal alignment clamp for girth welding
Assignee: AO Smith Corp
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Filing: 1952-07-11
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Granted: 1957-09-03
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Expires: 1972-07-11
Abstract
No abstract record available.
Inventors
- 👤 Julius B Tiedemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:27
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/04; B23K37/053; B23K37/0531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2353868A
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US2413103A
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US2429053A
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US2452867A
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US2587940A
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US2594000A
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US2615414A
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US2615413A
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US2638069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |