US3057023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window unit
Assignee: AMCO ALUMINUM Corp
•
Filing: 1960-03-28
•
Granted: 1962-10-09
•
Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 Leroy H Hewit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:24
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/28; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4609; E06B3/4618
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2663917A
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US2629143A
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US2676366A
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US2949647A
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US2699204A
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US2895182A
Cited
US2804954A
Cited
US2917792A
Cited
US2953824A
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US2877511A
Cited
US2918706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |