US1272852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring-wheel.
Assignee: GEORGE H BROWN
•
Filing: 1916-10-20
•
Granted: 1918-07-16
•
Expires: 1936-10-20
Abstract
No abstract record available.
Inventors
- 👤 William H Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:26
CPC Classifications
B; B60; B60C; B60C7/00; B60C7/10; B60C7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1921-07-15 | 1922-01-14 | 1922-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-07-15 | 1926-01-14 | 1926-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-07-15 | 1930-01-14 | 1930-07-16 | $7700.00 | Window Closed / Lapsed |