US2545400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal curtain
Assignee: A E WILSON
•
Filing: 1947-07-26
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Granted: 1951-03-13
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Expires: 1967-07-26
Abstract
No abstract record available.
Inventors
- 👤 Charles S White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:08
CPC Classifications
E; E04; E04F; E04F10/00; E04F10/08; E06; E06B; E06B9/00; E06B9/02; E06B9/08; E06B9/11; E06B9/15; E04F10/02; E04F10/06; E04F10/0611; E04F10/0614; E06B9/17; E06B9/171; E06B2009/1716; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |