Patent US2589878A successfully refreshed from Google Patents.
US2589878A
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Safety window guard fastener
Assignee: Individual
•
Filing: 1948-11-17
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Granted: 1952-03-18
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Expires: 1968-11-17
Abstract
No abstract record available.
Inventors
- 👤 Leona E Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:03
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/01; E05; E05D; E05D15/00; E05D15/16; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0863; Y10T292/0867; Y10T292/0911; Y10T292/0913; Y10T292/0914; Y10T292/0918; Y10T292/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |