Patent US2796898A successfully refreshed from Google Patents.
US2796898A
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Hard surfaced adzer bits
Assignee: Nordberg Manufacturing Co
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Filing: 1956-05-17
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Granted: 1957-06-25
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Expires: 1976-05-17
Abstract
No abstract record available.
Inventors
- 👤 John M Beyerstedt
- 👤 Helmer E Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:11
CPC Classifications
B; B23; B23K; B23K31/00; B23K31/02; B23K31/025; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12389; Y10T428/12396; Y10T428/12403; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/24802; Y10T428/24893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US239778A
Cited
US797708A
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US1423516A
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US1428287A
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US1587767A
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US1838470A
Cited
US2754861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |