Patent US2433677A successfully refreshed from Google Patents.
US2433677A
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US
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Construction of roofs and their supports
Assignee: Nutricia Ltd
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Filing: 1946-05-17
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Granted: 1947-12-30
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Expires: 1966-05-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas Mark Hartland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:41
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/19; E04B1/1903; E04B2001/1918; E04B2001/1924; E04B2001/1927; E04B2001/1936; E04B2001/1957; E04B2001/1963; E04B2001/1981; E04B2001/1984; E04B2001/199; E04B2001/1993
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) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |