US2980944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel and swivel brake device
Assignee: Individual
•
Filing: 1957-09-24
•
Granted: 1961-04-25
•
Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 Donald B Bolinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:40
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/04; B60B33/045; B60B33/02; B60B33/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1633638A
Cited
US1755537A
Cited
US2033146A
Cited
US2345442A
Cited
US2453916A
Cited
US2445865A
Cited
US2572548A
Cited
US2885720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |