Patent US3045276A successfully refreshed from Google Patents.
US3045276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring operated door closer
Assignee: Individual
•
Filing: 1960-09-12
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Granted: 1962-07-24
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Expires: 1980-09-12
Abstract
No abstract record available.
Inventors
- 👤 Charles A Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:20
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/16; E05D; E05D13/00; E05D13/10; E05D13/12; E05D13/1276; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/47; E05Y2201/482; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |