US2177093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite structure and method of forming the same
Assignee: VERMICULITE Corp OF AMERICA
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Filing: 1937-04-12
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Granted: 1939-10-24
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Expires: 1957-04-12
Abstract
No abstract record available.
Inventors
- 👤 James P Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:37
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/22; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/00586; Y; Y10; Y10S; Y10S106/00; Y10S106/03; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249973; Y10T428/25; Y10T428/259; Y10T428/31504; Y10T428/31815
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) | 1942-10-23 | 1943-04-24 | 1943-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-23 | 1947-04-24 | 1947-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-23 | 1951-04-24 | 1951-10-24 | $7700.00 | Window Closed / Lapsed |