Patent US3053546A successfully refreshed from Google Patents.
US3053546A
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US
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Assignee: KENNETH A JERNSTEDT
•
Filing: 1960-04-28
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Granted: 1962-09-11
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Expires: 1980-04-28
Abstract
No abstract record available.
Inventors
- 👤 Samuel A Muirhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:24
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/02; B62B5/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1170320A
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US1334726A
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US2023336A
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US2608258A
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US2740637A
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US2701005A
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US2823921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |