US2637547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louver window and operating mechanism
Assignee: Republic Steel Corp
•
Filing: 1949-12-27
•
Granted: 1953-05-05
•
Expires: 1969-12-27
Abstract
No abstract record available.
Inventors
- 👤 Elmon A Schottenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:15
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5036; E06B3/5009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371154A
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US1014679A
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US1479452A
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US1619167A
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US1839966A
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GB422248A
Cited
US2315542A
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US2442363A
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US2430970A
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US2505912A
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US2478061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |