Patent US2738543A successfully refreshed from Google Patents.
US2738543A
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US
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Double hinged door
Assignee: Individual
•
Filing: 1952-12-11
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Granted: 1956-03-20
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Expires: 1972-12-11
Abstract
No abstract record available.
Inventors
- 👤 William J Van Meter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:24
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/48; E05D15/50; E05D15/507; E05Y; E05Y2900/00; E05Y2900/30; E05Y2900/31; F; F25; F25D; F25D2323/00; F25D2323/02; F25D2323/022; F25D2323/024; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0814; Y10T292/0817; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0932
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395226A
Cited
US1813145A
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US2079608A
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US2185161A
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US2261147A
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US2275128A
Cited
US2357397A
Cited
US2349486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |