US2841345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glide path system with flare out
Assignee: Unisys Corp
•
Filing: 1952-01-15
•
Granted: 1958-07-01
•
Expires: 1972-01-15
Abstract
No abstract record available.
Inventors
- 👤 Halpert Percy
- 👤 George F Jude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:25
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2134132A
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US2423337A
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US2558850A
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US2536683A
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US2627384A
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US2651015A
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US2548278A
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US2613352A
Cited
US2648041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |