Patent US2875481A successfully refreshed from Google Patents.
US2875481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door sill
Assignee: Individual
•
Filing: 1956-10-05
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Granted: 1959-03-03
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Expires: 1976-10-05
Abstract
No abstract record available.
Inventors
- 👤 John G Erkkila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:23
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |