US3488947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque transfer apparatus for a free shaft gas turbine engine
Assignee: Boeing Co
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Filing: 1967-11-24
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Granted: 1970-01-13
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Expires: 1987-11-24
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Miller
- 👤 James C Tischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/36; F16; F16H; F16H47/00; F16H47/02; F16H47/04; F05; F05D; F05D2260/00; F05D2260/40; F05D2260/403; F05D2260/4031; F05D2260/40311; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H2037/0866; F16H2047/045
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) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |