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Patent US2752725A successfully refreshed from Google Patents.
US2752725A
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Fluid filled container with movable objects therein
Assignee: KENTWORTH Corp
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Filing: 1952-10-28
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Granted: 1956-07-03
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Expires: 1972-10-28
Abstract
No abstract record available.
Inventors
- 👤 Robert K Unsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:10
CPC Classifications
A; A63; A63F; A63F7/00; A63F7/04; A63F7/042; A63F7/045; A63F2250/00; A63F2250/04; A63F2250/0407
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US652477A
Cited
US806255A
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US990439A
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US1883265A
Cited
US2452730A
Cited
US2662336A
Cited
US2589757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |