US2996321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft locking collar
Assignee: Acrometal Products Inc
•
Filing: 1960-02-04
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Granted: 1961-08-15
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Expires: 1980-02-04
Abstract
No abstract record available.
Inventors
- 👤 Edward H Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:13
CPC Classifications
F; F16; F16B; F16B2/00; F16B2/20; F16B2/22; B; B65; B65H; B65H49/00; B65H49/18; B65H49/20; B65H49/26; F16B21/00; F16B21/10; F16B21/20; Y; Y10; Y10S; Y10S285/00; Y10S285/902; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20612; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2638318A
Cited
US2560225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |