Patent US1544548A successfully refreshed from Google Patents.
US1544548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bedspring tightener
Assignee: Individual
•
Filing: 1922-03-29
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Granted: 1925-07-07
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Expires: 1942-03-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:55
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/12; A47C23/28; Y; Y10; Y10T; Y10T403/00; Y10T403/29; Y10T403/293; Y10T403/32; Y10T403/32008; Y10T403/32057; Y10T403/32065; Y10T403/32254; Y10T403/32467; Y10T403/32475; Y10T403/32491
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) | 1928-07-06 | 1929-01-05 | 1929-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-07-06 | 1933-01-05 | 1933-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-07-06 | 1937-01-05 | 1937-07-07 | $7700.00 | Window Closed / Lapsed |