US3030783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Right-hand wound, left-hand wound, compression, extension, torsion spring
Assignee: Associated Spring Corp
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Filing: 1961-04-14
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Granted: 1962-04-24
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Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 Henry C Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:06
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/72
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) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |