US2994285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doorway construction
Assignee: Evans Products Co
•
Filing: 1956-06-11
•
Granted: 1961-08-01
•
Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Henry L Dunlap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:33
CPC Classifications
B; B61; B61D; B61D45/00; B61D45/001; B61D45/006; Y; Y10; Y10T; Y10T292/00; Y10T292/42; Y10T292/444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |