Patent US2631449A successfully refreshed from Google Patents.
US2631449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damage-resistant key holder
Assignee: Individual
•
Filing: 1950-05-25
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Granted: 1953-03-17
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Expires: 1970-05-25
Abstract
No abstract record available.
Inventors
- 👤 Edward J Protsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:01
CPC Classifications
A; A44; A44B; A44B15/00; A44C; A44C11/00; A44C11/005; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3984; Y10T24/47; Y10T24/4718; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676; Y10T70/8703
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) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |