Patent US3284950A successfully refreshed from Google Patents.
US2863344A
Expired / Lapsed
US
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Apparatus for butt welding
Assignee: ZF Active Safety US Inc
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Filing: 1955-01-13
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Granted: 1958-12-09
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Expires: 1975-01-13
Abstract
No abstract record available.
Inventors
- 👤 William A Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:22
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB160816A
Cited
US2144231A
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US2357204A
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US2364938A
Cited
US2544447A
Cited
GB689927A
Cited
FR1075750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |