US1927901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bell ringing device
Assignee: Individual
•
Filing: 1930-07-14
•
Granted: 1933-09-26
•
Expires: 1950-07-14
Abstract
No abstract record available.
Inventors
- 👤 Plagens Friedrich Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:07
CPC Classifications
G; G10; G10K; G10K1/00; G10K1/28; G10K1/30; G10K1/34; G10K1/344; G04; G04B; G04B21/00; G04B21/02; G04B21/08; G10K1/345
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) | 1936-09-25 | 1937-03-27 | 1937-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-25 | 1941-03-27 | 1941-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-25 | 1945-03-27 | 1945-09-26 | $7700.00 | Window Closed / Lapsed |