US2835520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular telescopic column
Assignee: Picker X Ray Corp
•
Filing: 1954-07-08
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Granted: 1958-05-20
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Expires: 1974-07-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Schiring
- 👤 Edgar J Bastin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:46
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/04; A; A61; A61B; A61B6/00; A61B6/44; A61B6/4429; A61B6/4464; E; E04; E04H; E04H12/00; E04H12/18; E04H12/182; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32091
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |