US2403443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impaling instrument
Assignee: AT&T Inc
•
Filing: 1945-01-13
•
Granted: 1946-07-09
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Expires: 1965-01-13
Abstract
No abstract record available.
Inventors
- 👤 Emil D Knab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:50
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/18; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5147; Y10T29/53; Y10T29/5313; Y10T29/532; Y10T29/53696; Y10T83/00; Y10T83/202; Y10T83/2033; Y10T83/2037; Y10T83/2057; Y10T83/2059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-08 | 1950-01-07 | 1950-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-08 | 1954-01-07 | 1954-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-08 | 1958-01-07 | 1958-07-09 | $7700.00 | Window Closed / Lapsed |