US2838820A
Expired / Lapsed
US
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Assignee: GUSUMS BRUKS AB
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Filing: 1954-09-01
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Granted: 1958-06-17
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Expires: 1974-09-01
Abstract
No abstract record available.
Inventors
- 👤 Hakanson Hans Eric Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:59
CPC Classifications
A; A44; A44B; A44B17/00; A44B17/0029; Y; Y10; Y10S; Y10S411/00; Y10S411/904; Y10S411/908; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45775; Y10T24/4588; Y10T24/45948
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT20285B
Cited
GB190522848A
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AT58646B
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CH75872A
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US2070162A
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US2368100A
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US2311613A
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GB621404A
Cited
US2656578A
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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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |