US2749755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampler mechanism
Assignee: Bowser Inc
•
Filing: 1952-07-31
•
Granted: 1956-06-12
•
Expires: 1972-07-31
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Pressler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:37
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/005; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1138994A
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US1474807A
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US2272313A
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US2548193A
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US2623544A
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US2584106A
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US2591274A
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US2576737A
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US2589712A
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US2668447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |