Patent US1215848A successfully refreshed from Google Patents.
US1215848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Square.
Assignee: Individual
•
Filing: 1915-01-09
•
Granted: 1917-02-13
•
Expires: 1935-01-09
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:47
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/44; F16B12/46; F16B2200/00; F16B2200/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1920-02-13 | 1920-08-14 | 1921-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-02-13 | 1924-08-14 | 1925-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-02-13 | 1928-08-14 | 1929-02-13 | $7700.00 | Window Closed / Lapsed |