Patent US2230898A successfully refreshed from Google Patents.
US2230898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener attached structure and fastener for the same
Assignee: Philco Radio and Television Corp
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Filing: 1937-11-15
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Granted: 1941-02-04
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Expires: 1957-11-15
Abstract
No abstract record available.
Inventors
- 👤 Wilford C Macfadden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:47
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/04; F; F16; F16B; F16B5/00; F16B5/06; F16B9/00; F16B9/05; F16B9/056; H01F27/00; H01F27/02; H01F27/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-02-04 | 1944-08-05 | 1945-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-04 | 1948-08-05 | 1949-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-04 | 1952-08-05 | 1953-02-04 | $7700.00 | Window Closed / Lapsed |