US3230845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spreader
Assignee: Individual
•
Filing: 1960-09-27
•
Granted: 1966-01-25
•
Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 John H Mauldin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:11
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4833; E01C19/4853; E01C19/486
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1744613A
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US1840970A
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US1994082A
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US2136917A
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US2332688A
Cited
US2413632A
Cited
US2586396A
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US2796811A
Cited
US2842036A
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US3029714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |