Patent US3475588A successfully refreshed from Google Patents.
US3475588A
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Defrosting and deicing window assembly
Assignee: Permaglass Inc
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Filing: 1968-08-20
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Granted: 1969-10-28
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Expires: 1988-08-20
Abstract
No abstract record available.
Inventors
- 👤 Harold A Mcmaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:15
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10165; B32B17/10174; B60; B60S; B60S1/00; B60S1/02; B60S1/023; B60S1/026; H; H05; H05B; H05B3/00; H05B3/84; H05B2203/00; H05B2203/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2495788A
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US2806118A
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US2557983A
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US2877329A
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US2954454A
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US2843713A
Cited
US2866881A
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US3313920A
Cited
US3379858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |