US2220137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can transfer valve
Assignee: Primerica Inc
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Filing: 1937-05-18
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Granted: 1940-11-05
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Expires: 1957-05-18
Abstract
No abstract record available.
Inventors
- 👤 James W Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:06
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/46; B65G53/4608; B65G53/4625; B65G53/4633; B65G53/4641; B65B; B65B43/00; B65B43/42; B65B43/50
Claims Analysis
Total Claims: 0
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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) | 1943-11-05 | 1944-05-06 | 1944-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-05 | 1948-05-06 | 1948-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-05 | 1952-05-06 | 1952-11-05 | $7700.00 | Window Closed / Lapsed |