US2793540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed-back mechanism leaf spring clamp
Assignee: Worthington Corp
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Filing: 1953-07-27
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Granted: 1957-05-28
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 John L Cronk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:13
CPC Classifications
G; G05; G05B; G05B6/00; G05B6/05; Y; Y10; Y10S; Y10S236/00; Y10S236/01; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/206
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |