Patent US2774858A successfully refreshed from Google Patents.
US2774858A
Expired / Lapsed
US
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Method of and apparatus for welding lap seams
Assignee: Continental Can Co Inc
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Filing: 1954-05-10
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Granted: 1956-12-18
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Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Richard D Heilshorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:38
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1544201A
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US1773892A
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US1880535A
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US1869188A
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US2209286A
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US2314099A
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US2663784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |