Patent US3075464A successfully refreshed from Google Patents.
US3075464A
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US
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Blast hole charge and charging method
Assignee: Reserve Mining Co
•
Filing: 1959-03-20
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Granted: 1963-01-29
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Expires: 1979-03-20
Abstract
No abstract record available.
Inventors
- 👤 Merlyn G Woodle
- 👤 Raymond J Bertie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:10
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/08; F42D1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2708876A
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US2745346A
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US2903969A
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US2867172A
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US2836484A
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US2817581A
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US2955534A
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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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |