Patent US3535136A successfully refreshed from Google Patents.
US3535136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for terminating a protective coating on a cylindrical member
Assignee: Schlumberger Technology Corp
•
Filing: 1967-12-18
•
Granted: 1970-10-20
•
Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 Calvin D Beene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:43
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/006; F16L15/008; F16L58/00; F16L58/18; F16L58/182; Y; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901; Y10S411/902; Y10S411/903
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |