Patent US2936873A successfully refreshed from Google Patents.
US2936873A
Expired / Lapsed
US
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Load transfer system
Assignee: Individual
•
Filing: 1956-06-21
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Granted: 1960-05-17
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Expires: 1976-06-21
Abstract
No abstract record available.
Inventors
- 👤 Sol H Seidman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:46
CPC Classifications
B; B65; B65G; B65G23/00; B65G23/02; B65G23/14; B61; B61K; B61K1/00; B66; B66B; B66B21/00; B66B21/10
Claims Analysis
Total Claims: 0
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Cited
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Cited
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US2804191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |