US2628516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube making process
Assignee: Westinghouse Electric Corp
•
Filing: 1949-07-09
•
Granted: 1953-02-17
•
Expires: 1969-07-09
Abstract
No abstract record available.
Inventors
- 👤 Porter H Brace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US495245A
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GB189608709A
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US1082933A
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DE365076C
Cited
US1236384A
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US1258188A
Cited
US1343946A
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US1552848A
Cited
US2373405A
Cited
US2300353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |