US2953977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable telescoping spreader
Assignee: Individual
•
Filing: 1957-05-22
•
Granted: 1960-09-27
•
Expires: 1977-05-22
Abstract
No abstract record available.
Inventors
- 👤 Warren Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:10
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4866; E01C19/4873
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1035037A
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US1070156A
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US1731231A
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US1662257A
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US2089094A
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US2054437A
Cited
US2591502A
Cited
GB718511A
Cited
US2747476A
Cited
US2848930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |