US3208360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aggregate spreader
Assignee: Individual
•
Filing: 1962-04-30
•
Granted: 1965-09-28
•
Expires: 1982-04-30
Abstract
No abstract record available.
Inventors
- 👤 Albert J Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:57
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/18; E01C19/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1401149A
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US2215455A
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US2525915A
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US2586396A
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GB718511A
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US2800340A
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US2888864A
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US2874621A
Cited
US2953977A
Cited
US3026780A
Cited
US2962947A
Cited
US3029714A
Cited
US3109353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |