US3559382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desiccant breather for electrical transformers, reactors and associated equipment
Assignee: WR Grace and Co
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Filing: 1968-04-10
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Granted: 1971-02-02
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Expires: 1988-04-10
Abstract
Abstract AN APPARATUS FOR DRYING GASES PASSING INTO OR OUT OF AN OTHERWISE CLOSED CHAMBER. SAID APPARATUS COMPRISES A TRANSPARENT CONTAINER FOR DESICCANT. A MEANS TO CONTROL THE ADMISSION OF ATMOSPHERIC AIR INTO THE DESICCANT CONTAINER, AND A RELEASABLE MEANS FOR EASILY REMOVING THE DESICCANT FROM ITS CONTAINER.
Inventors
- 👤 Peter Charles Jaggard
- 👤 Graham Goerge Hooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:54
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/10; H01F27/12; H01F27/14; B; B01; B01D; B01D53/00; B01D53/26; B01D53/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |