US2773709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bimetallic coupling for flanged pipe elements
Assignee: Individual
•
Filing: 1956-01-11
•
Granted: 1956-12-11
•
Expires: 1976-01-11
Abstract
No abstract record available.
Inventors
- 👤 Smith Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:31
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/04; F16L23/08; F16L23/10; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1441; Y10T292/00; Y10T292/20; Y10T292/205; Y10T292/212; Y10T292/214
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2271425A
Cited
US2575213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |