US2699327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining head for cutting and dislodging coal
Assignee: Goodman Manufacturing Co LP
•
Filing: 1949-10-19
•
Granted: 1955-01-11
•
Expires: 1969-10-19
Abstract
No abstract record available.
Inventors
- 👤 Cartlidge Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/10; E21C27/12; E21C27/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1148975A
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US981201A
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GB191324707A
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US1190300A
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US1565376A
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US1761670A
Cited
US2096917A
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US2269781A
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US2287230A
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US2415217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-10 | 1958-07-12 | 1959-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-10 | 1962-07-12 | 1963-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-10 | 1966-07-12 | 1967-01-11 | $7700.00 | Window Closed / Lapsed |