US2688235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defrost water disposal system
Assignee: International Motors LLC
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Filing: 1953-04-07
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Granted: 1954-09-07
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Expires: 1973-04-07
Abstract
No abstract record available.
Inventors
- 👤 Eric H Schwenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:36
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/14; F25D2321/00; F25D2321/14; F25D2321/141; F25D2321/1411; F25D2321/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |