Patent US2807152A successfully refreshed from Google Patents.
US2807152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defroster for an end of an ice forming tube
Assignee: Individual
•
Filing: 1955-04-01
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Granted: 1957-09-24
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Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 Merlin S Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:58
CPC Classifications
F; F25; F25C; F25C5/00; F25C5/02; F25C5/04; F25C5/08; F25C5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US170508A
Cited
US2080639A
Cited
US2397347A
Cited
US2618129A
Cited
US2637177A
Cited
US2595588A
Cited
US2749721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |