US2381383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of proofing tubes
Assignee: Bridgestone Firestone Inc
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Filing: 1941-08-23
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Granted: 1945-08-07
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Expires: 1961-08-23
Abstract
No abstract record available.
Inventors
- 👤 George E Steinel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:29
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81461; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/52211; B29C66/70; B29C66/71; B29C65/00; B29C65/02; B29K; B29K2021/00
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) | 1948-08-06 | 1949-02-05 | 1949-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-06 | 1953-02-05 | 1953-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-06 | 1957-02-05 | 1957-08-07 | $7700.00 | Window Closed / Lapsed |