US2753604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door canopy or awning
Assignee: Chamberlain Corp
•
Filing: 1951-02-17
•
Granted: 1956-07-10
•
Expires: 1971-02-17
Abstract
No abstract record available.
Inventors
- 👤 Nicholas L Etten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:20
CPC Classifications
E; E04; E04F; E04F10/00; E04F10/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2657437A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |