US2731055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonmetallic enclosure
Assignee: Bridgestone Firestone Inc
•
Filing: 1951-08-21
•
Granted: 1956-01-17
•
Expires: 1971-08-21
Abstract
No abstract record available.
Inventors
- 👤 Clifford D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:54
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H15/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2497186A
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US2517757A
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US2633172A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |