Patent US2739675A successfully refreshed from Google Patents.
US2739675A
Expired / Lapsed
US
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Shutter construction
Assignee: Honeywell Inc
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Filing: 1950-06-15
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Granted: 1956-03-27
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Expires: 1970-06-15
Abstract
No abstract record available.
Inventors
- 👤 David H Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:29
CPC Classifications
B; B61; B61C; B61C17/00; B61C17/04; E; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/084
Claims Analysis
Total Claims: 0
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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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |