Patent US2226495A successfully refreshed from Google Patents.
US2226495A
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US
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Closure
Assignee: Lummus Technology LLC
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Filing: 1939-04-22
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Granted: 1940-12-24
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Expires: 1959-04-22
Abstract
No abstract record available.
Inventors
- 👤 George T Jacocks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:34
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/06; F16; F16J; F16J15/00; F16J15/46; F16J15/48; F28; F28F; F28F2230/00; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/205; Y10T292/218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-12-24 | 1944-06-24 | 1944-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-24 | 1948-06-24 | 1948-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-24 | 1952-06-24 | 1952-12-24 | $7700.00 | Window Closed / Lapsed |