US3018090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger fittings
Assignee: FINTUBE Co
•
Filing: 1955-06-02
•
Granted: 1962-01-23
•
Expires: 1975-06-02
Abstract
No abstract record available.
Inventors
- 👤 Robert W Kaase
- 👤 William C Sessions
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:38
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/06; F16; F16L; F16L39/00; F16L39/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1068742A
Cited
US1400541A
Cited
US2298511A
Cited
US2337221A
Cited
US2424221A
Cited
US2449052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |