US3106520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentric tube structure
Assignee: Atomic Energy of Canada Ltd AECL
•
Filing: 1961-02-09
•
Granted: 1963-10-08
•
Expires: 1981-02-09
Abstract
No abstract record available.
Inventors
- 👤 William A Wolfe
- 👤 Pease Liberty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/18; F16B; F16B7/00; F16B7/10; F28; F28F; F28F9/00; F28F9/007; F28F9/013; G; G21; G21C; G21C1/00; G21C1/04; G21C1/06; G21C1/14; G21C1/16; G21C1/18; G21C1/20; F16C; F16C29/00; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44949; Y10T24/44957
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2832733A
Cited
US2537024A
Cited
US2525730A
Cited
US2915446A
Cited
US2863817A
Cited
US2875987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |