US2678479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window construction
Assignee: Individual
•
Filing: 1949-05-19
•
Granted: 1954-05-18
•
Expires: 1969-05-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred B Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:38
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/26; E06B3/2605; E06B2003/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172580A
Cited
US1614156A
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US1823085A
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US1989305A
Cited
US2156964A
Cited
US2326897A
Cited
US2430772A
Cited
US2402112A
Cited
US2563058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |