Patent US2038034A successfully refreshed from Google Patents.
US2038034A
Expired / Lapsed
US
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Refractory material and method of making the same
Assignee: Individual
•
Filing: 1933-03-27
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Granted: 1936-04-21
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Expires: 1953-03-27
Abstract
No abstract record available.
Inventors
- 👤 Albert A Fowler
- 👤 Russell M Otis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:09
CPC Classifications
C; C04; C04B; C04B30/00; C04B28/00; C04B28/24; C04B28/26; C04B2111/00; C04B2111/20; C04B2111/28; Y; Y10; Y10S; Y10S264/00; Y10S264/63; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/237; Y10T428/238; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24289; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347
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) | 1939-04-21 | 1939-10-21 | 1940-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-04-21 | 1943-10-21 | 1944-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-04-21 | 1947-10-21 | 1948-04-21 | $7700.00 | Window Closed / Lapsed |