US3486892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preferential etching technique
Assignee: Raytheon Co
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Filing: 1969-01-17
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Granted: 1969-12-30
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Expires: 1989-01-17
Abstract
No abstract record available.
Inventors
- 👤 Warren C Rosvold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:58
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/60; H10D84/67; H10D84/673; C; C23; C23F; C23F1/00; C23F1/02; H10D84/01; H10D86/00; H10D86/01; H10D99/00; H10P; H10P50/00; H10P50/60; H10P50/64; H10P50/642; H10P50/644; H10P50/69; H10P50/691; H10P50/692; H10P50/693; H10P90/00; H10P90/19; H10P90/1904; H10P90/1906; H10W; H10W10/00; H10W10/01; H10W10/061; H10W10/10; H10W10/181; H10W10/021; H10W10/20; Y; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S148/106; Y10S148/115
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) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |