US3363306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing methods for porous refractory metals
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1964-09-18
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Granted: 1968-01-16
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Expires: 1984-09-18
Abstract
No abstract record available.
Inventors
- 👤 Milton E Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:09
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/322; B23K35/001; B23K35/005; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/936; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12153; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3132928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |