Patent US6743196B2 successfully refreshed from Google Patents.
US1865634A
Expired / Lapsed
US
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Building material and process of making same
Assignee: Flintkote Co
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Filing: 1931-03-02
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Granted: 1932-07-05
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Expires: 1951-03-02
Abstract
No abstract record available.
Inventors
- 👤 Kirschbraun Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:20
CPC Classifications
D; D06; D06N; D06N5/00; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24355; Y10T428/24372; Y10T428/24421; Y10T428/2443; Y10T428/24471; Y10T428/25; Y10T428/26; Y10T428/31504; Y10T428/31652; Y10T428/31815; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/2115; Y10T442/2631
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) | 1935-07-05 | 1936-01-04 | 1936-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-05 | 1940-01-04 | 1940-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-05 | 1944-01-04 | 1944-07-05 | $7700.00 | Window Closed / Lapsed |