Patent US2077519A successfully refreshed from Google Patents.
US2077519A
Expired / Lapsed
US
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Method of making metal articles
Assignee: Lamson and Sessions Co
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Filing: 1933-11-22
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Granted: 1937-04-20
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Expires: 1953-11-22
Abstract
No abstract record available.
Inventors
- 👤 Lee A Frayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:11
CPC Classifications
B; B21; B21J; B21J1/00; B21J1/04; B21K; B21K1/00; B21K1/44; B21K1/46; B21K1/64; B21K1/68
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) | 1940-04-19 | 1940-10-19 | 1941-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-19 | 1944-10-19 | 1945-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-19 | 1948-10-19 | 1949-04-20 | $7700.00 | Window Closed / Lapsed |