US2529861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable seat supporting structure
Assignee: SS White Dental Manufacturing Co
•
Filing: 1945-09-01
•
Granted: 1950-11-14
•
Expires: 1965-09-01
Abstract
No abstract record available.
Inventors
- 👤 Robert C Angell
- 👤 George H Browne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:17
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/20; A47C3/28; A47C3/285; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1610730A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |