Patent US2859334A successfully refreshed from Google Patents.
US2859334A
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Louvers
Assignee: EDWIN F GUTH CO
•
Filing: 1954-09-09
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Granted: 1958-11-04
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Expires: 1974-09-09
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:40
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/06; F21V13/00; F21V13/02; F21V5/00; F21V5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US436085A
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US1610481A
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US1827651A
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US2086388A
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US2223841A
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US2242872A
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US2398624A
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US2506951A
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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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |