Patent US2435702A successfully refreshed from Google Patents.
US2435702A
Expired / Lapsed
US
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Pressure welding machine
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1944-03-30
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Granted: 1948-02-10
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Expires: 1964-03-30
Abstract
No abstract record available.
Inventors
- 👤 Phillip W Vallee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:54
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/02; Y; Y10; Y10S; Y10S228/00; Y10S228/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US610524A
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US1848905A
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US2018379A
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US1872235A
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US2061287A
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US2231027A
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US2269523A
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US2231014A
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GB547112A
Cited
US2376765A
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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) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |