US2078698A
Expired / Lapsed
US
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Material working apparatus and hydraulic system of control therefor
Assignee: Babcock and Wilcox Co
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Filing: 1933-11-01
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Granted: 1937-04-27
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Expires: 1953-11-01
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Svenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:52
CPC Classifications
B; B23; B23Q; B23Q11/00; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/513; Y10T29/5152; Y10T29/5154; Y10T29/5158; Y10T29/5168; Y10T29/5175; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305936; Y10T82/00; Y10T82/25
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) | 1940-04-26 | 1940-10-26 | 1941-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-26 | 1944-10-26 | 1945-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-26 | 1948-10-26 | 1949-04-27 | $7700.00 | Window Closed / Lapsed |