US3538667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush-type panel and shaft construction
Assignee: Individual
•
Filing: 1968-03-12
•
Granted: 1970-11-10
•
Expires: 1988-03-12
Abstract
No abstract record available.
Inventors
- 👤 Baard Eri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:56
CPC Classifications
B; B62; B62D; B62D31/00; B62D31/02; B62D27/00; B62D27/06; B62D33/00; B62D33/04; B62D33/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1910249A
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US2113067A
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US2392129A
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US2461082A
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US3013642A
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US2765057A
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US3224154A
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US3136395A
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US3199258A
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US3242625A
Cited
US3398496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |