US2439822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saw-tooth surface broach
Assignee: LaPointe Hudson Broach
•
Filing: 1943-11-02
•
Granted: 1948-04-20
•
Expires: 1963-11-02
Abstract
No abstract record available.
Inventors
- 👤 Wilrose J Phaneuf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:37
CPC Classifications
B; B23; B23D; B23D65/00; B23D65/02; B23D43/00; B23D43/02; Y; Y10; Y10T; Y10T407/00; Y10T407/16; Y10T407/1628
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1932223A
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US1979973A
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US2173074A
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US2204537A
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US2250392A
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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) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |