US3431615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory metal diffusion bonding
Assignee: GTE Sylvania Inc
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Filing: 1964-12-11
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Granted: 1969-03-11
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Expires: 1984-12-11
Abstract
No abstract record available.
Inventors
- 👤 Marold Weston Hagadorn
- 👤 Bruce R Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:10
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; B; B23; B23K; B23K35/00; B23K35/001; B23K35/005; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022
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 |