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Patent US1260561A successfully refreshed from Google Patents.
US1260561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-opener.
Assignee: Individual
•
Filing: 1917-07-30
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Granted: 1918-03-26
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Expires: 1937-07-30
Abstract
No abstract record available.
Inventors
- 👤 Elmer Lovejoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:17
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/02; E05F11/04; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1921-03-25 | 1921-09-24 | 1922-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-03-25 | 1925-09-24 | 1926-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-03-25 | 1929-09-24 | 1930-03-26 | $7700.00 | Window Closed / Lapsed |