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US3050831A
Expired / Lapsed
US
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Methods of making structural beams
Assignee: Individual
•
Filing: 1960-03-28
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Granted: 1962-08-28
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Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 Diamond Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:20
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/083; E04C3/086; B; B21; B21D; B21D47/00; B21D47/04; E04C2003/0404; E04C2003/0408; E04C2003/0413; E04C2003/0426; E04C2003/043; E04C2003/0434; E04C2003/0443; E04C2003/0452; E04C2003/0469; E04C2003/0478; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49625; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/0538; Y10T83/0548; Y10T83/0558
Claims Analysis
Total Claims: 0
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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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |