Patent DE505122C successfully refreshed from Google Patents.
US2621673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic solution control apparatus
Assignee: Individual
•
Filing: 1948-06-12
•
Granted: 1952-12-16
•
Expires: 1968-06-12
Abstract
No abstract record available.
Inventors
- 👤 Jr John G Hodgens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:09
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/44; A47L15/449; A47L15/0018; A47L15/0055; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2509
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |