Patent US694850A successfully refreshed from Google Patents.
Patent US2829881A successfully refreshed from Google Patents.
US2829881A
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Vibratory spring of embedded filaments
Assignee: Carrier Conveyor Corporation
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Filing: 1957-02-13
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Granted: 1958-04-08
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Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 John M Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:02
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/366; F16F1/368; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; B65; B65G; B65G27/00; B29L; B29L2031/00; B29L2031/774; B65G2812/00; B65G2812/03; B65G2812/0348; B65G2812/0364
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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |