Patent US3486204A successfully refreshed from Google Patents.
US3486204A
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Assignee: McDonnell Douglas Corp
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Filing: 1967-07-26
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Granted: 1969-12-30
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Expires: 1987-07-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Hurtner
- 👤 Charles H Miller Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:01
CPC Classifications
B; B64; B64D; B64D11/00; B64D11/06; B64D11/0696; A; A47; A47C; A47C7/00; A47C7/002; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45482
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 |