US3492824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of installing a pipe nipple in the wall of a casing
Assignee: Dick Evans Inc
•
Filing: 1967-05-12
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Granted: 1970-02-03
•
Expires: 1987-05-12
Abstract
No abstract record available.
Inventors
- 👤 Richard V Evans
- 👤 Virgil Williams Jr
- 👤 Max A W Reiher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:33
CPC Classifications
E; E02; E02B; E02B17/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49806; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1382049A
Cited
US1762313A
Cited
AT112942B
Cited
US2779279A
Cited
GB766741A
Cited
US3131467A
Cited
US3224204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |