Patent US3329414A successfully refreshed from Google Patents.
US3329414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated water-cooled furnace supporting structure
Assignee: United States Steel Corp
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Filing: 1965-03-30
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Granted: 1967-07-04
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Expires: 1985-03-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Greaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:52
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/02; F27D3/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN INSULATED WATER-COOLED FURNACE SUPPORTING STRUCTURE COMPRISING A TUBE FOR RECEIVING WATER, A PLURALITY OF SPACED APART SETS OF INSULATING MEMBERS SURROUNDING SAID TUBE, EACH OF SAID INSULATING MEMBERS EXTENDING AROUND LESS THAN THE FULL CIRCUMFERENCE OF SAID TUBE, AND
Claim 2
Dependent Claim
40 words
AN INSULATED WATER-COOLED FURNACE SUPPORTING STRUCTURE COMPRISING A TUBE FOR RECEIVING WATER, A PLURALITY OF SPACED APART SETS OF INSULATING MEMBERS SURROUNDING SAID TUBE, EACH OF SAID INSULATING MEMBERS EXTENDING AROUND LESS THAN THE FULL CIRCUMFERENCE OF SAID TUBE, AND
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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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |