US2620187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevating mechanism for bowling alley pits
Assignee: BRUNSWICK-BALKE-COLLENDER Co
•
Filing: 1947-05-15
•
Granted: 1952-12-02
•
Expires: 1967-05-15
Abstract
No abstract record available.
Inventors
- 👤 Whipple Jack Van Horn
- 👤 George P Bentley
- 👤 Edward P Bentley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:58
CPC Classifications
A; A63; A63D; A63D5/00; A63D5/08; A63D5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1203216A
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US1542804A
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US1627414A
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US1557177A
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US1692796A
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US1586831A
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US2242069A
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US2250503A
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US2346189A
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US2341476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |