Patent US2794522A successfully refreshed from Google Patents.
US2794522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window frames and parts
Assignee: Warner Mfg Corp
•
Filing: 1953-12-30
•
Granted: 1957-06-04
•
Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Leonard M Lipman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:37
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4453; E06B2003/4492
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1688231A
Cited
US2141348A
Cited
US2304063A
Cited
US2339420A
Cited
US2560139A
Cited
US2663896A
Cited
US2637879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |