Patent US4039316A successfully refreshed from Google Patents.
US2560352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scarifier
Assignee: Individual
•
Filing: 1946-01-04
•
Granted: 1951-07-10
•
Expires: 1966-01-04
Abstract
No abstract record available.
Inventors
- 👤 Cadwallader W Kelsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:11
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US510738A
Cited
US513708A
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US1696576A
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US2214702A
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US2287479A
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US2345741A
Cited
US2383386A
Cited
US2366626A
Cited
US2462641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |