US2493950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency inductive welding apparatus
Assignee: Motors Liquidation Co
•
Filing: 1944-12-01
•
Granted: 1950-01-10
•
Expires: 1964-12-01
Abstract
No abstract record available.
Inventors
- 👤 William G Dow
- 👤 Harold C Early
- 👤 Henry J Gomberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:17
CPC Classifications
B; B23; B23K; B23K13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1809468A
Cited
US1932423A
Cited
US1861869A
Cited
US1915047A
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US2003855A
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US1997741A
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US2184281A
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US2176488A
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GB467308A
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US2182341A
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US2144378A
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US2217546A
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US2151035A
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US2181899A
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US2318468A
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US2355560A
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US2348361A
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US2367715A
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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) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |