US2429588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating material
Assignee: American Lava Corp
•
Filing: 1941-10-02
•
Granted: 1947-10-21
•
Expires: 1961-10-02
Abstract
No abstract record available.
Inventors
- 👤 Thurnauer Hans
- 👤 Deaderick James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1760513A
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FR719067A
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US2272330A
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US2214703A
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US2218655A
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US2277733A
Cited
US2277734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |