Patent US2602238A successfully refreshed from Google Patents.
US2602238A
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US
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Boring jig or drill guide
Assignee: Individual
•
Filing: 1949-04-27
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Granted: 1952-07-08
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Expires: 1969-04-27
Abstract
No abstract record available.
Inventors
- 👤 Clifton E Wellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:51
CPC Classifications
B; B23; B23B; B23B47/00; B23B47/28; B23B47/287; B23B47/288; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/563; Y10T408/5633; Y10T408/56337; Y10T408/5635; Y10T408/567; Y10T408/96; Y10T408/98
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US48018A
Cited
US335845A
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DE635704C
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US787893A
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US809069A
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US889273A
Cited
US1269811A
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US1280379A
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US2470038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |