Patent US2105324A successfully refreshed from Google Patents.
US2105324A
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Method of producing lightweight material
Assignee: FREDERICK O ANDEREGG
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Filing: 1934-04-28
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Granted: 1938-01-11
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Expires: 1954-04-28
Abstract
No abstract record available.
Inventors
- 👤 Huttemann Erik
- 👤 Czernin Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:07
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/18; C04B2111/00; C04B2111/20; C04B2111/28; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S264/00; Y10S264/63; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/172; Y10T442/174
Claims Analysis
Total Claims: 0
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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) | 1941-01-10 | 1941-07-12 | 1942-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-10 | 1945-07-12 | 1946-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-10 | 1949-07-12 | 1950-01-11 | $7700.00 | Window Closed / Lapsed |