US2692002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Straightening apparatus
Assignee: Individual
•
Filing: 1949-10-10
•
Granted: 1954-10-19
•
Expires: 1969-10-10
Abstract
No abstract record available.
Inventors
- 👤 Marcellus S Merrill
- 👤 Lawrence W Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:07
CPC Classifications
B; B21; B21D; B21D1/00; B21D1/14; Y; Y10; Y10S; Y10S72/00; Y10S72/705
Claims Analysis
Total Claims: 0
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US2422030A
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US2469670A
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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) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |