US3432280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory metal articles
Assignee: Bristol Siddeley Engines Ltd
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Filing: 1965-02-19
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Granted: 1969-03-11
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Expires: 1985-02-19
Abstract
No abstract record available.
Inventors
- 👤 Geirionydd Llewelyn
- 👤 Raymond George Ubank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:32
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/52; C23C10/54; C23C10/56; C23C10/58; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/936; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12674; Y10T428/12736; Y10T428/12743; Y10T428/12771; Y10T428/12806; Y10T428/12812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |