US2597072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bowling ball automatic retarder
Assignee: Individual
•
Filing: 1948-08-23
•
Granted: 1952-05-20
•
Expires: 1968-08-23
Abstract
No abstract record available.
Inventors
- 👤 Lewis F Cowgill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:14
CPC Classifications
A; A63; A63D; A63D5/00; A63D5/02; A63D5/023; A63D5/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979466A
Cited
US2292753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |