Patent US2491949A successfully refreshed from Google Patents.
Patent US2771971A successfully refreshed from Google Patents.
US2771971A
Expired / Lapsed
US
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Metal window assembly
Assignee: Individual
•
Filing: 1949-10-01
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Granted: 1956-11-27
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Expires: 1969-10-01
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:07
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5009; E06B3/5018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1005249A
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US1959908A
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US1840221A
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US1919393A
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US2262670A
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US2284074A
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US2560752A
Cited
US2504701A
Cited
US2504702A
Cited
US2565772A
Cited
US2541675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |