US2749720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual purpose lamp for refrigerator
Assignee: Whirlpool Corp
•
Filing: 1952-12-29
•
Granted: 1956-06-12
•
Expires: 1972-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Si J Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:38
CPC Classifications
F; F25; F25D; F25D27/00; F25D21/00; F25D21/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1824638A
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US1974146A
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US2215123A
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US2234254A
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US2209869A
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US2315285A
Cited
US2378816A
Cited
US2466479A
Cited
US2618126A
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US2592394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |