US2649890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine and method for producing corner beads for use in dry-built construction
Assignee: DUNLAP
•
Filing: 1952-04-02
•
Granted: 1953-08-25
•
Expires: 1972-04-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Dunlap
- 👤 Frank S Boldrin
- 👤 William C Boldrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:53
CPC Classifications
A; A21; A21B; A21B7/00; F; F26; F26B; F26B23/00; F26B23/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1541297A
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US2146223A
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US2390612A
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US2423962A
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US2431353A
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US2436383A
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US2566152A
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US2593859A
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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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |