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Patent US2439973A successfully refreshed from Google Patents.
US2439973A
Expired / Lapsed
US
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Dobby knife connector
Assignee: Individual
•
Filing: 1946-11-15
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Granted: 1948-04-20
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Expires: 1966-11-15
Abstract
No abstract record available.
Inventors
- 👤 Charles A Gunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:21
CPC Classifications
D; D03; D03C; D03C1/00; D03C1/06; D03C2700/00; D03C2700/01; D03C2700/0127; D03C2700/0133; D03C2700/0138; D03C2700/0155; D03C2700/0172; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32737; Y10T403/32811
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) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |