Patent US2754577A successfully refreshed from Google Patents.
US2754577A
Expired / Lapsed
US
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Method of making a pipe line
Assignee: Babcock and Wilcox Co
•
Filing: 1950-11-22
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Granted: 1956-07-17
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Expires: 1970-11-22
Abstract
No abstract record available.
Inventors
- 👤 Carl A Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:56
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49936; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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US2160263A
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US2219784A
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US2284260A
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US2367206A
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US2383241A
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US2399790A
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US2451146A
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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) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |