Patent US3305984A successfully refreshed from Google Patents.
US3305984A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1963-11-19
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Granted: 1967-02-28
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Expires: 1983-11-19
Abstract
No abstract record available.
Inventors
- 👤 Michael W Borcuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:26
CPC Classifications
A; A62; A62B; A62B99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US435511A
Cited
US722250A
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US855159A
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US905399A
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US1161534A
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US1721436A
Cited
US2674968A
Cited
US2738750A
Cited
US2843932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |