US2532773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-disconnect duct joint
Assignee: Lockheed Martin Corp
•
Filing: 1947-08-15
•
Granted: 1950-12-05
•
Expires: 1967-08-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Kellam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/24; F16L37/244; F16L37/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR357535A
Cited
US1063996A
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US1022759A
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US1357892A
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US1910152A
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US2215659A
Cited
US2277990A
Cited
US2294160A
Cited
US2395745A
Cited
US2438529A
Cited
US2426423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |