Patent US2823709A successfully refreshed from Google Patents.
US2823709A
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US
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Protractor for electric hand saw
Assignee: Individual
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Filing: 1956-05-29
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Granted: 1958-02-18
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Expires: 1976-05-29
Abstract
No abstract record available.
Inventors
- 👤 Edmund T Konieczka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:07
CPC Classifications
B; B23; B23Q; B23Q17/00; B23Q17/22; B23Q17/2233; B23Q9/00; B23Q9/0014; B23Q9/0042; B23Q9/005; Y; Y10; Y10T; Y10T83/00; Y10T83/667; Y10T83/68; Y10T83/687; Y10T83/6905; Y10T83/6945; Y10T83/695; Y10T83/696; Y10T83/6975; Y10T83/748; Y10T83/7487; Y10T83/756; Y10T83/768; Y10T83/7755; Y10T83/7763; Y10T83/7768; Y10T83/7772
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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |