Patent US2993242A successfully refreshed from Google Patents.
US2993242A
Expired / Lapsed
US
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Double-glazed assemblies for windows and doors
Assignee: ALUCO BAUELEMENTE PATENTGESELL
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Filing: 1958-01-20
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Granted: 1961-07-25
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Expires: 1978-01-20
Abstract
No abstract record available.
Inventors
- 👤 Leisibach Franz Xaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:37
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/06; E06B3/24
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |