US2962749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closing device
Assignee: JOSEPH STACHOWICZ
•
Filing: 1954-10-28
•
Granted: 1960-12-06
•
Expires: 1974-10-28
Abstract
No abstract record available.
Inventors
- 👤 Sasse Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:23
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/04; E05F3/10; E05F3/106; E05F3/22; E05F3/225; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1595723A
Cited
GB344038A
Cited
US2223045A
Cited
US2468410A
Cited
US2585625A
Cited
US2669745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |