Patent US2511298A successfully refreshed from Google Patents.
US2511298A
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US
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Broaching tool
Assignee: Cleveland Steel Products Corp
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Filing: 1946-02-21
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Granted: 1950-06-13
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Expires: 1966-02-21
Abstract
No abstract record available.
Inventors
- 👤 Ludwig J Schinnerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:43
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/0009; B23Q1/0018; B23Q1/0027; B23Q1/0036; B23D; B23D43/00; B23D43/02; Y; Y10; Y10T; Y10T407/00; Y10T407/14; Y10T407/16; Y10T407/1614
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |