Patent US2532448A successfully refreshed from Google Patents.
US2532448A
Expired / Lapsed
US
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Bellows
Assignee: Cook Electric Co
•
Filing: 1945-03-22
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Granted: 1950-12-05
•
Expires: 1965-03-22
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hasselhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:12
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/04; F16J3/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1195133A
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US1726584A
Cited
US1909744A
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US2071583A
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US2117219A
Cited
US2174635A
Cited
US2233132A
Cited
US2323985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |