Patent US3547209A successfully refreshed from Google Patents.
Patent US2952869A successfully refreshed from Google Patents.
US2952869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing fibers
Assignee: Johns Manville Corp
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Filing: 1958-12-24
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Granted: 1960-09-20
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Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 Edward R Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:12
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; C03B37/05; C03B37/055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AN APPARATUS FOR PRODUCING FIBERS COMPRISING, A PAIR OF SURFACES EACH HAVING A MULTIPLICITY OF ROWS OF PROJECTIONS THEREON, MEANS FOR MOVING PROJECTIONS OF ONE SURFACE INTO AND OUT OF INTERMESING RELATIONSHIP WITH PROJECTIONS OF THE OTHER SURFACE, AND MEANS FOR SUPPLYING MOLTEN FIBER-FORMING MATERIAL TO SAID SURFACES.
Claim 2
Independent Claim
48 words
AN APPARATUS FOR PRODUCING FIBERS COMPRISING, A PAIR OF SURFACES EACH HAVING A MULTIPLICITY OF ROWS OF PROJECTIONS THEREON, MEANS FOR MOVING PROJECTIONS OF ONE SURFACE INTO AND OUT OF INTERMESING RELATIONSHIP WITH PROJECTIONS OF THE OTHER SURFACE, AND MEANS FOR SUPPLYING MOLTEN FIBER-FORMING MATERIAL TO SAID SURFACES.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |