Patent US2732809A successfully refreshed from Google Patents.
US2732809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liner assemblies
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
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Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:17
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02; F16J10/04; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/166; F04B53/168
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) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |