US2430189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating switch
Assignee: ROBERT HETHERINGTON AND SON IN
•
Filing: 1944-12-22
•
Granted: 1947-11-04
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Expires: 1964-12-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Schellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:13
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/023
Claims Analysis
Total Claims: 0
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US2374873A
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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) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |