Patent US2649874A successfully refreshed from Google Patents.
US2649874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jointer attachment for portable electric drills
Assignee: Individual
•
Filing: 1950-01-09
•
Granted: 1953-08-25
•
Expires: 1970-01-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Konopa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:27
CPC Classifications
B; B27; B27C; B27C1/00; B27C1/10; Y; Y10; Y10T; Y10T408/00; Y10T408/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1103814A
Cited
US1192849A
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US1418328A
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US1530028A
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US1898956A
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US2017531A
Cited
US2395268A
Cited
GB585068A
Cited
US2539581A
Cited
US2519526A
Cited
US2544461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |