US1576223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel-wool buffer
Assignee: Williams Co
•
Filing: 1925-06-05
•
Granted: 1926-03-09
•
Expires: 1945-06-05
Abstract
No abstract record available.
Inventors
- 👤 William H Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:01
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/02; A47L13/04; Y; Y10; Y10T; Y10T29/00; Y10T29/14; Y10T29/147; Y10T428/00; Y10T428/12; Y10T428/12444
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) | 1929-03-08 | 1929-09-07 | 1930-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-03-08 | 1933-09-07 | 1934-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-03-08 | 1937-09-07 | 1938-03-09 | $7700.00 | Window Closed / Lapsed |