Patent US2684259A successfully refreshed from Google Patents.
US2684259A
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US
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Swivel unit
Assignee: NARAS RES Inc
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Filing: 1952-05-14
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Granted: 1954-07-20
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Expires: 1972-05-14
Abstract
No abstract record available.
Inventors
- 👤 Schwartz Nathan Rodney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:27
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/14; F21V21/30; Y; Y10; Y10S; Y10S285/00; Y10S285/907; Y10T; Y10T403/00; Y10T403/32; Y10T403/32549; Y10T403/32557; Y10T403/32581
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |