Patent US2980285A successfully refreshed from Google Patents.
US2980285A
Expired / Lapsed
US
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Case construction
Assignee: Skydyne Inc
•
Filing: 1957-09-10
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Granted: 1961-04-18
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Expires: 1977-09-10
Abstract
No abstract record available.
Inventors
- 👤 George B Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:50
CPC Classifications
B; B65; B65D; B65D7/00; B65D7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US936451A
Cited
US1607711A
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US2371493A
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US2578644A
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US2579655A
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US2635786A
Cited
US2724468A
Cited
US2764314A
Cited
US2767876A
Cited
US2729355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |