US3058550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural unit
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1961-04-24
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Granted: 1962-10-16
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Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 Donald L Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:31
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/08; E04B7/10; E04B7/102; E04B1/00; E04B1/32; E04B1/3211; E04B2001/3235; E04B2001/3241; E04B2001/3247; E04B2001/3252; E04B2001/327; E04B2001/3276; E04B2001/3282; E04B2001/3288; E04B2001/3294; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874
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) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |