US2809726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Securing means for curtain wall panels
Assignee: Reynolds Metals Co
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Filing: 1954-04-13
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Granted: 1957-10-15
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Expires: 1974-04-13
Abstract
No abstract record available.
Inventors
- 👤 Melville T Farquhar
- 👤 Donald H Revell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:10
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/61; E04B1/6108; E04B1/6116; E04B2/00; E04B2/88; E04B2/90; E04B2/92; F; F16; F16B; F16B37/00; F16B37/04; F16B37/045; F16B5/00; F16B5/0004; F16B5/0056; F16B5/0068; F16B5/0072
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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |