US2626425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production of mineral wool
Assignee: MINERAL WOOL INSULATIONS Co
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Filing: 1951-04-13
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Granted: 1953-01-27
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Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles W Hawthorne
- 👤 Charles T Sauers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:02
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/06; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 0
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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) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |