Patent US3420469A successfully refreshed from Google Patents.
US3420469A
Expired / Lapsed
US
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Passive communications satellite or similar article
Assignee: ATK Launch Systems LLC
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Filing: 1966-07-22
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Granted: 1969-01-07
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Expires: 1986-07-22
Abstract
No abstract record available.
Inventors
- 👤 John S Johnson
- 👤 Edward E Mccullough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:16
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/10; B64G1/1007; H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/081; H01Q1/082; H04; H04B; H04B7/00; H04B7/14; H04B7/145; Y; Y10; Y10S; Y10S343/00; Y10S343/02; Y10S428/00; Y10S428/90
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |