US2513802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for covering cores
Assignee: AT&T Inc
•
Filing: 1946-09-18
•
Granted: 1950-07-04
•
Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 David D Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:15
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/15; B29C48/03; B29C48/05; B29C48/06; Y; Y10; Y10S; Y10S425/00; Y10S425/033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2069087A
Cited
US2137887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |