Patent US3040427A successfully refreshed from Google Patents.
US3040427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of uniting copper and aluminum tubes
Assignee: Individual
•
Filing: 1958-08-29
•
Granted: 1962-06-26
•
Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 Howell Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12; B23K20/129; B21; B21D; B21D39/00; B21D39/04; F; F16; F16L; F16L13/00; F16L13/007
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2094495A
Cited
US2040240A
Cited
GB427912A
Cited
US2268343A
Cited
US2258913A
Cited
GB572789A
Cited
US2482178A
Cited
GB667143A
Cited
US2782498A
Cited
US2795039A
Cited
US2823933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |