Patent US2864472A successfully refreshed from Google Patents.
US2864472A
Expired / Lapsed
US
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Fasteners
Assignee: FT Products Ltd
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Filing: 1955-06-07
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Granted: 1958-12-16
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Expires: 1975-06-07
Abstract
No abstract record available.
Inventors
- 👤 Fernberg Eric Birger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:27
CPC Classifications
F; F16; F16B; F16B2/00; F16B2/20; F16B2/22; F16B2/24; F16B2/241; F16B2/243; Y; Y10; Y10T; Y10T24/00; Y10T24/30; Y10T24/304; Y10T24/307; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45524; Y10T24/45545
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |