Patent US2835783A successfully refreshed from Google Patents.
US2835783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube welding machine
Assignee: Youngstown Welding and Engineering Co
•
Filing: 1954-08-31
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Granted: 1958-05-20
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Expires: 1974-08-31
Abstract
No abstract record available.
Inventors
- 👤 Charles G Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:48
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0253
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1679499A
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US1946302A
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US1972029A
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US1914518A
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US2260260A
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US2468808A
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US2547872A
Cited
US2544711A
Cited
US2695942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |