Patent US2087480A successfully refreshed from Google Patents.
US2087480A
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Cementing process
Assignee: EIDP Inc
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Filing: 1935-10-30
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Granted: 1937-07-20
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Expires: 1955-10-30
Abstract
No abstract record available.
Inventors
- 👤 Earle C Pitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:31
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; A; A43; A43D; A43D25/00; A43D25/06; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/482; B29C66/00; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; Y; Y10; Y10S; Y10S264/00; Y10S264/46; Y10S65/00; Y10S65/04; Y10S8/00; Y10S8/12
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) | 1940-07-19 | 1941-01-18 | 1941-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-19 | 1945-01-18 | 1945-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-19 | 1949-01-18 | 1949-07-20 | $7700.00 | Window Closed / Lapsed |