US2356776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for preparation of oil base drilling fluid
Assignee: DEMONT G MILLER
•
Filing: 1942-06-16
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Granted: 1944-08-29
•
Expires: 1962-06-16
Abstract
No abstract record available.
Inventors
- 👤 Miller George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:30
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/32; Y; Y10; Y10S; Y10S507/00; Y10S507/91
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) | 1947-08-29 | 1948-02-28 | 1948-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-29 | 1952-02-28 | 1952-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-29 | 1956-02-28 | 1956-08-29 | $7700.00 | Window Closed / Lapsed |