US2720006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed mechanism for carding apparatus
Assignee: BIGELOW SANFORD CARPET CO
•
Filing: 1949-10-29
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Granted: 1955-10-11
•
Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Charles W Carter
- 👤 James S Cowhey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:20
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/02; D01G15/12; D01G15/36; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19555
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |