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Patent US2860869A successfully refreshed from Google Patents.
US2860869A
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Annular springs and method of manufacturing them
Assignee: INTERNAT ENGINEERING GENERAL R
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Filing: 1956-05-03
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Granted: 1958-11-18
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Expires: 1976-05-03
Abstract
No abstract record available.
Inventors
- 👤 Utvitch Jovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:19
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/32; B; B21; B21D; B21D53/00; B21D53/16; B21D53/20; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18; F16B21/183; F16B39/00; F16B39/22; F16B39/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49609
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |