Patent US2689719A successfully refreshed from Google Patents.
US2689719A
Expired / Lapsed
US
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Mining apparatus with longitudinally swiveled head
Assignee: Joy Manufacturing Co
•
Filing: 1946-12-20
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Granted: 1954-09-21
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Expires: 1966-12-20
Abstract
No abstract record available.
Inventors
- 👤 Clyde P Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:48
CPC Classifications
E; E21; E21C; E21C31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1737045A
Cited
US755238A
Cited
US1337048A
Cited
US1904488A
Cited
US1946634A
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US2062657A
Cited
US2075954A
Cited
US2131175A
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US2100336A
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US2224872A
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US2261162A
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US2263779A
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US2334772A
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US2327928A
Cited
US2357724A
Cited
US2310314A
Cited
US2365387A
Cited
US2381425A
Cited
US2395302A
Cited
US2559711A
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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) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |