Patent US2874653A successfully refreshed from Google Patents.
US2874653A
Expired / Lapsed
US
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Skylight frame construction
Assignee: Marco Co
•
Filing: 1954-08-23
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Granted: 1959-02-24
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Expires: 1974-08-23
Abstract
No abstract record available.
Inventors
- 👤 George I Ratner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:50
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/03; E04D13/032
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US260294A
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US423888A
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US1634987A
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US1872868A
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US1910605A
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US2269656A
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CH247943A
Cited
US2610593A
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US2703060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |