US3451840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire coated with boron nitride and boron
Assignee: United States Department of the Air Force
•
Filing: 1965-10-06
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Granted: 1969-06-24
•
Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Hough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:49
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/28; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2916; Y10T428/2933; Y10T428/294; Y10T428/2942
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2952599A
Cited
US3131089A
Cited
US3152006A
Cited
US3351484A
Cited
US3321337A
Cited
US3359468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |