Patent US2566638A successfully refreshed from Google Patents.
US2566638A
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Assignee: CASPER A BRICTSON
•
Filing: 1948-05-25
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Granted: 1951-09-04
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Expires: 1968-05-25
Abstract
No abstract record available.
Inventors
- 👤 Clyde A Shoults
- 👤 George G Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:09
CPC Classifications
G; G05; G05G; G05G1/00; G05G1/58; G05G1/60; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20888; Y10T74/20912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1517592A
Cited
US1557400A
Cited
US1608124A
Cited
US1706003A
Cited
US1618652A
Cited
US2271663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |