Patent US2547302A successfully refreshed from Google Patents.
US2547302A
Expired / Lapsed
US
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Frameless screen tension
Assignee: KEYSTONE WIRE CLOTH Co
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Filing: 1949-05-24
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Granted: 1951-04-03
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Expires: 1969-05-24
Abstract
No abstract record available.
Inventors
- 👤 Herman J Blaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:16
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/52; E06B9/521
Claims Analysis
Total Claims: 0
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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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |