Patent US2537540A successfully refreshed from Google Patents.
US2537540A
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US
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Means and method for cutting blanks from thin sheets or strips of metal
Assignee: ANNA Z MESSENGER
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Filing: 1945-11-07
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Granted: 1951-01-09
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Expires: 1965-11-07
Abstract
No abstract record available.
Inventors
- 👤 Messenger Zilda Minerva
- 👤 Messenger William Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:36
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/06; Y; Y10; Y10S; Y10S83/00; Y10S83/923; Y10T; Y10T83/00; Y10T83/04; Y10T83/0495; Y10T83/0524; Y10T83/0529; Y10T83/0534; Y10T83/444; Y10T83/4564
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |