Patent US2677157A successfully refreshed from Google Patents.
US2677157A
Expired / Lapsed
US
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Combination storm window and ventilator
Assignee: Individual
•
Filing: 1953-04-14
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Granted: 1954-05-04
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Expires: 1973-04-14
Abstract
No abstract record available.
Inventors
- 👤 William H Stefanakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:48
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1213947A
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US1488162A
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US1924284A
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US2203172A
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US2249641A
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US2366339A
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US2661509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |