Patent US2882548A successfully refreshed from Google Patents.
US2882548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door checking and retaining means
Assignee: Individual
•
Filing: 1956-03-12
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Granted: 1959-04-21
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Expires: 1976-03-12
Abstract
No abstract record available.
Inventors
- 👤 John H Roethel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:58
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/12; E05C17/20; E05C17/203; E05C17/206; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/301
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |