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Patent US2070852A successfully refreshed from Google Patents.
US2070852A
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Method of forming lined pipe ends
Assignee: Individual
•
Filing: 1935-04-06
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Granted: 1937-02-16
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Expires: 1955-04-06
Abstract
No abstract record available.
Inventors
- 👤 Bannerman William Ewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:50
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; B29; B29C; B29C57/00; B29C57/005; B29C63/00; B29C63/26; B29C63/34; B29C63/346; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49826; Y10T29/49885; Y10T29/49908; Y10T29/49915; Y10T29/4992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-02-16 | 1940-08-17 | 1941-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-16 | 1944-08-17 | 1945-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-16 | 1948-08-17 | 1949-02-16 | $7700.00 | Window Closed / Lapsed |