Patent US2641493A successfully refreshed from Google Patents.
US2641493A
Expired / Lapsed
US
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Window screen latch
Assignee: Individual
•
Filing: 1950-04-03
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Granted: 1953-06-09
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Expires: 1970-04-03
Abstract
No abstract record available.
Inventors
- 👤 Walter W Flugrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:07
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/06; Y; Y10; Y10S; Y10S292/00; Y10S292/35; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/082; Y10T292/68
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |