US3107421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining enamel lined pipes
Assignee: Individual
•
Filing: 1959-02-06
•
Granted: 1963-10-22
•
Expires: 1979-02-06
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Turnbull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:12
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/14; F16L58/18; F16L58/181; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885
Claims Analysis
Total Claims: 0
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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) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |