US3530469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy impingement device
Assignee: Boeing North American Inc
•
Filing: 1968-06-26
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Granted: 1970-09-22
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Expires: 1988-06-26
Abstract
No abstract record available.
Inventors
- 👤 William J Dailey
- 👤 George W Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:02
CPC Classifications
B; B64; B64G; B64G99/00; B64G1/00; B64G1/22; B64G1/222; B64G1/2221; B64G1/2222; H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/16; H01Q15/161; B64G1/40; B64G1/407; B64G1/42; B64G1/44; B64G1/66
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) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |