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US3407713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skimat
Assignee: Individual
•
Filing: 1966-03-08
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Granted: 1968-10-29
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Expires: 1986-03-08
Abstract
No abstract record available.
Inventors
- 👤 Robert S Heckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
A; A63; A63C; A63C19/00; A63C19/10; E; E01; E01C; E01C13/00; E01C13/10; E01C13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US269480A
Cited
US957387A
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US1666938A
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US2082563A
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US2174716A
Cited
US2558759A
Cited
US3066580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |