Patent US2217455A successfully refreshed from Google Patents.
US2217455A
Expired / Lapsed
US
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Package
Assignee: AT&T Inc
•
Filing: 1937-11-20
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Granted: 1940-10-08
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Expires: 1957-11-20
Abstract
No abstract record available.
Inventors
- 👤 Price Stanley
- 👤 Edward C Sloan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:00
CPC Classifications
B; B65; B65D; B65D25/00; B65D25/02; B65D25/10
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) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |