Patent US2552298A successfully refreshed from Google Patents.
US2552298A
Expired / Lapsed
US
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Metal window sash frame
Assignee: DONALD O STILES
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Filing: 1948-01-08
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Granted: 1951-05-08
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Expires: 1968-01-08
Abstract
No abstract record available.
Inventors
- 👤 Richard H Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:44
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/06; E06B3/08; E06B3/12; E06B3/32; E06B3/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1925100A
Cited
US2044258A
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US2169865A
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US2124775A
Cited
US2187490A
Cited
US2208802A
Cited
US2249257A
Cited
US2504700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |