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US2715746A
Expired / Lapsed
US
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Door check structure
Assignee: Individual
•
Filing: 1950-03-13
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Granted: 1955-08-23
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Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 Paul H Travis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:12
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/12; E05C17/20; E05C17/203; Y; Y10; Y10S; Y10S16/00; Y10S16/17; Y10T; Y10T292/00; Y10T292/28; Y10T292/301
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1837517A
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US2032600A
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US2072257A
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US2219822A
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GB569287A
Cited
US2565804A
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US2527933A
Cited
US2580705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |