US2420874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clock-actuated electric control means
Assignee: Individual
•
Filing: 1944-07-10
•
Granted: 1947-05-20
•
Expires: 1964-07-10
Abstract
No abstract record available.
Inventors
- 👤 Herman J Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:08
CPC Classifications
G; G07; G07C; G07C3/00; G07C3/02; G07C3/04; G03; G03B; G03B9/00; G03B9/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US349605A
Cited
US2290626A
Cited
US843621A
Cited
US1865604A
Cited
US1796906A
Cited
US2254795A
Cited
US2069876A
Cited
US2318969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |