US2697386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel
Assignee: Daystrom Inc
•
Filing: 1949-05-06
•
Granted: 1954-12-21
•
Expires: 1969-05-06
Abstract
No abstract record available.
Inventors
- 👤 Clifford J Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
B; B31; B31C; B31C1/00; B31C1/08; B31C1/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US9020A
Cited
US366908A
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US647234A
Cited
US949564A
Cited
US1733893A
Cited
US1862337A
Cited
US1992077A
Cited
US2440390A
Cited
US2569856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |