US2479911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for manufacturing heat and sound insulating material
Assignee: Compagnies Reunies des Glaces et Verres Speciaux du Nord de la France
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Filing: 1945-03-22
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Granted: 1949-08-23
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Expires: 1965-03-22
Abstract
No abstract record available.
Inventors
- 👤 Delloye Andre Laurent Camille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/88; C; C03; C03B; C03B37/00; C03B37/10; C04; C04B; C04B14/00; C04B14/38; C04B14/42; C04B28/00; C04B28/24; C04B28/26; C04B30/00; C04B30/02; E04B1/82; E04B2001/8245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1804254A
Cited
US1756468A
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US1873559A
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US1956377A
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US2068203A
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GB507476A
Cited
US2257112A
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US2288072A
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US2371880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |