Patent US3108918A successfully refreshed from Google Patents.
US3108918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trepanning of cased explosives by etching
Assignee: Individual
•
Filing: 1944-01-12
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Granted: 1963-10-29
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Expires: 1964-01-12
Abstract
No abstract record available.
Inventors
- 👤 Harold J Plumley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:58
CPC Classifications
F; F42; F42B; F42B33/00; F42B33/06; F42B33/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF GAINING ACCESS TO THE INTERIOR OF A METALLIC CASING CONTAINING EXPLOSIVE MATERIAL COMPRISING DIRECTING A SPRAY OF LIQUID WHICH IS CORROSIVE WITH RESPECT TO SAID CASING AGAINST A SELECTED SECTION THEREOF FROM WHICH LIQUID WILL RUN FREELY, REGULATING SAID SPRAY TO A RATE NOT EXCEEDING 1.5 CUBIC CENTIMETERS PER SECOND FOR A PERIOD LONG ENOUGH TO FORM AN OPENING THEREIN WHEREBY SAID SECTION IS DISSOLVED AT THE OPTIMUM SAFE AND ECONOMICAL SPEED.
Claim 2
Independent Claim
75 words
THE METHOD OF GAINING ACCESS TO THE INTERIOR OF A METALLIC CASING CONTAINING EXPLOSIVE MATERIAL COMPRISING DIRECTING A SPRAY OF LIQUID WHICH IS CORROSIVE WITH RESPECT TO SAID CASING AGAINST A SELECTED SECTION THEREOF FROM WHICH LIQUID WILL RUN FREELY, REGULATING SAID SPRAY TO A RATE NOT EXCEEDING 1.5 CUBIC CENTIMETERS PER SECOND FOR A PERIOD LONG ENOUGH TO FORM AN OPENING THEREIN WHEREBY SAID SECTION IS DISSOLVED AT THE OPTIMUM SAFE AND ECONOMICAL SPEED.
References Cited (Backward Citations)
DE305616C
Cited
US247151A
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US764082A
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FR388411A
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US964116A
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US1164228A
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US2166990A
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US2336846A
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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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |