US3442537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite forged fitting of diverse metals
Assignee: Weatherhead Co
•
Filing: 1964-10-01
•
Granted: 1969-05-06
•
Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 Louis B Courtot
- 👤 Thomas J Mack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:26
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/20; F16L33/207; B; B21; B21K; B21K1/00; B21K1/14; B21K1/16; B25; B25B; B25B27/00; B25B27/02; B25B27/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US332354A
Cited
US1670532A
Cited
US2267571A
Cited
US2370603A
Cited
US2494241A
Cited
US2517669A
Cited
US3040417A
Cited
US2955222A
Cited
GB872580A
Cited
US3093888A
Cited
US3178952A
Cited
US3315333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |