Patent US3560746A successfully refreshed from Google Patents.
Patent US2596792A successfully refreshed from Google Patents.
US2596792A
Expired / Lapsed
US
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Metal door
Assignee: Crawford Door Co
•
Filing: 1946-06-21
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Granted: 1952-05-13
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Expires: 1966-06-21
Abstract
No abstract record available.
Inventors
- 👤 Lowell V Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:10
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/72; E06B3/721; E06B2003/7044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1354929A
Cited
US781068A
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US973751A
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US1240634A
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US1168539A
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US1365059A
Cited
DE549474C
Cited
US2075558A
Cited
DE652633C
Cited
GB501158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |