Patent US2815922A successfully refreshed from Google Patents.
US2815922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-operated mechanism
Assignee: CH Wheeler Manufacturing Co
•
Filing: 1955-02-28
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Granted: 1957-12-10
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Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 Louis G L Thomas
- 👤 Samuel K Lehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:14
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/05
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) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |