US3191706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic support
Assignee: Douglas Aircraft Co Inc
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Filing: 1962-06-11
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Granted: 1965-06-29
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Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Thorvald K Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:02
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/08; G; G01; G01G; G01G19/00; G01G19/02; G01G19/07
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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |