US3057989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain wall
Assignee: Thermway Ind Inc
•
Filing: 1958-05-23
•
Granted: 1962-10-09
•
Expires: 1978-05-23
Abstract
No abstract record available.
Inventors
- 👤 Basil A Needham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:52
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB225272A
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GB238024A
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US1968015A
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GB443297A
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US2525850A
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GB589752A
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US2505117A
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US2545805A
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US2634361A
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US2742556A
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US2715668A
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US2743908A
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US2773676A
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US2859321A
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US2939807A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |