Patent US2033990A successfully refreshed from Google Patents.
US3336634A
Expired / Lapsed
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Quenching chimney
Assignee: EIDP Inc
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Filing: 1966-04-22
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Granted: 1967-08-22
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Expires: 1986-04-22
Abstract
No abstract record available.
Inventors
- 👤 Brownley Trenholm Lowell
- 👤 Stotesberry Ralph Bennie
- 👤 Sublett John William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:18
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/088; D01D5/092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN COMBINATION WITH A SPINNERT ASSEMBLY AND A DISTANT CONVERGENCE GUIDE, A FILAMENT-QUENCHING CHIMNEY EXTENDING FROM SAID ASSEMBLY TOWARD THE GUIDE, SAID CHIMNEY HAVING A TOP WALL APERTURED FOR REGISTRY WITH SAID ASSEMBLY AND BEING COMPRISED OF SUCCESSIVE RECTANGULAR, CONVERGNETLY TAPERED AND TUB ULAR LENGTHS, SAID RECTANGULAR LENGTH HAVING FRONT, BACK AND SIDE WALLS, THERE
Claim 2
Dependent Claim
55 words
IN COMBINATION WITH A SPINNERT ASSEMBLY AND A DISTANT CONVERGENCE GUIDE, A FILAMENT-QUENCHING CHIMNEY EXTENDING FROM SAID ASSEMBLY TOWARD THE GUIDE, SAID CHIMNEY HAVING A TOP WALL APERTURED FOR REGISTRY WITH SAID ASSEMBLY AND BEING COMPRISED OF SUCCESSIVE RECTANGULAR, CONVERGNETLY TAPERED AND TUB ULAR LENGTHS, SAID RECTANGULAR LENGTH HAVING FRONT, BACK AND SIDE WALLS, THERE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |