US3496687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible structure
Assignee: Boeing North American Inc
•
Filing: 1967-03-22
•
Granted: 1970-02-24
•
Expires: 1987-03-22
Abstract
No abstract record available.
Inventors
- 👤 Harry S Greenberg
- 👤 George W Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:34
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/343; E04B1/344; E04B1/3441; B; B64; B64G; B64G99/00; E01; E01D; E01D15/00; E01D15/12; E01D15/124; E04B7/00; E04B7/16; H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/16; H01Q15/161; E04B1/18; E04B1/19; E04B2001/1996
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US797077A
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US1708113A
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US2071093A
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FR800658A
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DE835050C
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US2767812A
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US3053351A
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US3224007A
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US3152347A
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US3261016A
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US3174397A
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US3286270A
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US3360798A
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US3375624A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |