US3393612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive device
Assignee: Dresser Industries Inc
•
Filing: 1966-05-12
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Granted: 1968-07-23
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Expires: 1986-05-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Gorgens
- 👤 Levine Walter Eli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:19
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2607; G; G01; G01L; G01L7/00; G01L7/16; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0638; G05D16/0641; H01H35/34; H01H11/00; H01H11/0006; H01H35/2614
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US19177A
Cited
US2223976A
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US2319011A
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GB739398A
Cited
FR1146271A
Cited
US3119910A
Cited
US3043929A
Cited
US3254573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |