US2700176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple rotor fiberizing device
Assignee: Johns Manville Corp
•
Filing: 1951-01-24
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Granted: 1955-01-25
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Expires: 1971-01-24
Abstract
No abstract record available.
Inventors
- 👤 Graybeal Bruce Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:22
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; C03B37/05; C03B37/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US361822A
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US443651A
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US452204A
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US1459947A
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US2182720A
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US2399383A
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US2398707A
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US2428810A
Cited
US2520168A
Cited
US2520169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |