US2925650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming perforate metal sheets
Assignee: Pall Corp
•
Filing: 1956-01-30
•
Granted: 1960-02-23
•
Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 David B Pall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:04
CPC Classifications
B; B21; B21F; B21F33/00; B21F27/00; B21F27/12; B21F27/18; B22; B22F; B22F3/00; B22F3/002; B22F2998/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49604; Y10T428/00; Y10T428/12; Y10T428/12424; Y10T428/12479
Claims Analysis
Total Claims: 0
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US781015A
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US2082513A
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US2633630A
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US2691815A
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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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |