US2670508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double pane sash assembly
Assignee: Individual
•
Filing: 1951-05-26
•
Granted: 1954-03-02
•
Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 Sylvan Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:09
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)
US1974739A
Cited
US1090715A
Cited
US1682669A
Cited
US1690204A
Cited
US2011557A
Cited
US2015789A
Cited
US2571677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |