US2826839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller conveyor for excavating wheel
Assignee: UNITED ELECTRIC COAL Cie
•
Filing: 1953-11-06
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Granted: 1958-03-18
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Expires: 1973-11-06
Abstract
No abstract record available.
Inventors
- 👤 Frank F Kolbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:49
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/22; E02F3/24; E02F3/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US308741A
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US369948A
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US1319058A
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US655955A
Cited
US918373A
Cited
AT67565B
Cited
US1476375A
Cited
US1581318A
Cited
US2217075A
Cited
US2417846A
Cited
US2631718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |