US3485131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for operating on sheet material
Assignee: W A Whitney Manufacturing Co
•
Filing: 1966-08-11
•
Granted: 1969-12-23
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Expires: 1986-08-11
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Brolund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:35
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/26; B21D22/00; Y; Y10; Y10T; Y10T83/00; Y10T83/808; Y10T83/817; Y10T83/869; Y10T83/8742; Y10T83/8743; Y10T83/8821; Y10T83/8855; Y10T83/8858; Y10T83/929; Y10T83/9457; Y10T83/9473; Y10T83/9476
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US486906A
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US1311540A
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US2269914A
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US2323431A
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US2381062A
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US3196728A
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US3198052A
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US3283634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |