US2670820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door construction
Assignee: Coe Manufacturing Co
•
Filing: 1950-11-08
•
Granted: 1954-03-02
•
Expires: 1970-11-08
Abstract
No abstract record available.
Inventors
- 👤 Worthington Roy Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:56
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/82; E06B3/822; F; F26; F26B; F26B25/00; F26B25/06; F26B25/08; F26B25/12; E06B2003/7046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE217960C
Cited
US262356A
Cited
US1554395A
Cited
US982303A
Cited
US1581038A
Cited
GB490163A
Cited
AT171242B
Cited
US2249591A
Cited
US2284229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |