US2984995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified ball and socket coupling
Assignee: Individual
•
Filing: 1960-05-13
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Granted: 1961-05-23
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Expires: 1980-05-13
Abstract
No abstract record available.
Inventors
- 👤 David D Kalen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:33
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0604; F16D; F16D3/00; F16D3/16; F16D3/20; G; G21; G21C; G21C19/00; G21C19/02; G21C19/10; G21C19/11; G21C7/00; G21C7/06; G21C7/08; G21C7/12; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32549; Y10T403/32557; Y10T403/32565; Y10T403/32591
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |