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US3399456A
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US
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Assignee: E T M Corp
•
Filing: 1967-05-24
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Granted: 1968-09-03
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Expires: 1987-05-24
Abstract
No abstract record available.
Inventors
- 👤 Gary L Johnson
- 👤 Robert M Shryock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:09
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/10; B25G1/105; B25G1/107; H; H05; H05K; H05K13/00; H05K13/0007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1108572A
Cited
US1134849A
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US1775562A
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US1822912A
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US1985674A
Cited
US2328200A
Cited
US3241881A
Cited
US3279008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |