US2942896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible ducting compensator
Assignee: Lockheed Martin Corp
•
Filing: 1954-06-07
•
Granted: 1960-06-28
•
Expires: 1974-06-07
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:28
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/03; F16L51/035
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE543925C
Cited
DE543928C
Cited
DE835378C
Cited
US2348833A
Cited
CH262367A
Cited
CH258088A
Cited
US2614887A
Cited
US2766997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |