Patent US2993679A successfully refreshed from Google Patents.
US2993679A
Expired / Lapsed
US
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Hoisting apparatus for cylindrical tanks
Assignee: Individual
•
Filing: 1959-02-20
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Granted: 1961-07-25
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Expires: 1979-02-20
Abstract
No abstract record available.
Inventors
- 👤 Morgan John Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:54
CPC Classifications
E; E04; E04H; E04H7/00; E04H7/02; E04H7/04; E04H7/06; E04B; E04B1/00; E04B1/35; E04B1/3522; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA560253A
Cited
US1839578A
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US2582548A
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US2715013A
Cited
US2604303A
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US2605540A
Cited
US2673064A
Cited
US2866261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |