US3408855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining detonation velocity of explosives
Assignee: Dow Chemical Co
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Filing: 1965-11-03
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Granted: 1968-11-05
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Expires: 1985-11-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Slykhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:45
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A DETONATION VELOCITY MEASURING GAUGE COMPRISING: (A) A HELICAL RESISTANCE ELEMENT HAVING SPACED APART TURNS, (B) A LOW RESISTANCE ROD-LIKE ELEMENT, THE LENGTH OF SAID ROD-LIKE ELEMENT BEING A MINOR FRACTION OF THE LENGTH OF SAID HELICAL RESISTANCE ELEMENT, (C) A FIXED RESISTANCE ELEMENT, SAID HELICAL RESISTANCE ELEMENT, SAID ROD-LIKE ELEMENT, AND SAID FIXED RESISTANCE ELEMENT BEING DISPOSED IN END TO END RELATIONSHIP IN THAT ORDER AND ELECTRICALLY CONNECTED IN SERIES,
Claim 2
Dependent Claim
71 words
A DETONATION VELOCITY MEASURING GAUGE COMPRISING: (A) A HELICAL RESISTANCE ELEMENT HAVING SPACED APART TURNS, (B) A LOW RESISTANCE ROD-LIKE ELEMENT, THE LENGTH OF SAID ROD-LIKE ELEMENT BEING A MINOR FRACTION OF THE LENGTH OF SAID HELICAL RESISTANCE ELEMENT, (C) A FIXED RESISTANCE ELEMENT, SAID HELICAL RESISTANCE ELEMENT, SAID ROD-LIKE ELEMENT, AND SAID FIXED RESISTANCE ELEMENT BEING DISPOSED IN END TO END RELATIONSHIP IN THAT ORDER AND ELECTRICALLY CONNECTED IN SERIES,
References Cited (Backward Citations)
US3027751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |