US2770155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball and helical race for mechanical movements
Assignee: MORGAN DEV LAB Inc
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Filing: 1952-07-26
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Granted: 1956-11-13
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Expires: 1972-07-26
Abstract
No abstract record available.
Inventors
- 👤 Porter S Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:44
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; B; B25; B25B; B25B1/00; B25B1/24; F16H25/2025; F16H25/2233; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32434; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19721; Y10T74/19744; Y10T74/19781; Y10T74/19786
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2214493A
Cited
US2472002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |