Patent US1883486A successfully refreshed from Google Patents.
US1883486A
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Laminated sheet material
Assignee: Johns Manville Corp
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Filing: 1930-07-29
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Granted: 1932-10-18
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Expires: 1950-07-29
Abstract
No abstract record available.
Inventors
- 👤 Charles J Beckwith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:43
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249968; Y10T428/249986; Y10T428/31504; Y10T428/31971; Y10T428/31989
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) | 1935-10-18 | 1936-04-18 | 1936-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-18 | 1940-04-18 | 1940-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-18 | 1944-04-18 | 1944-10-18 | $7700.00 | Window Closed / Lapsed |