US2469851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube coupling
Assignee: Weatherhead Co
•
Filing: 1946-01-18
•
Granted: 1949-05-10
•
Expires: 1966-01-18
Abstract
No abstract record available.
Inventors
- 👤 Henry D Stecher
- 👤 Helen E Jackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:48
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/04; F16L19/08; F16L19/10; F16L19/12; Y; Y10; Y10S; Y10S285/00; Y10S285/906; Y10S285/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1063926A
Cited
US1872863A
Cited
GB409692A
Cited
US1984806A
Cited
US2115383A
Cited
US2182811A
Cited
GB453217A
Cited
US2226826A
Cited
US2393252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |