US2538749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic window
Assignee: Individual
•
Filing: 1945-08-09
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Granted: 1951-01-23
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Expires: 1965-08-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Kerbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:37
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/40; E06B1/00; E06B1/04; E06B1/36; E06B1/366; E05; E05D; E05D7/00; E05D7/08; E05D7/082; E05D7/083; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US749201A
Cited
US1297786A
Cited
US1663134A
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US1650640A
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US2060525A
Cited
US2101349A
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GB481975A
Cited
US2263796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |