US2793833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for charging shot holes
Assignee: Individual
•
Filing: 1953-02-19
•
Granted: 1957-05-28
•
Expires: 1973-02-19
Abstract
No abstract record available.
Inventors
- 👤 Sr John P Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:39
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/08; E; E21; E21B; E21B7/00; E21B7/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US185447A
Cited
GB296352A
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US2048677A
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US2146645A
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US2184514A
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US2300813A
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US2614804A
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US2665886A
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US2621895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |