Patent US2565502A successfully refreshed from Google Patents.
US2565502A
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Assignee: Individual
•
Filing: 1947-08-23
•
Granted: 1951-08-28
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Expires: 1967-08-23
Abstract
No abstract record available.
Inventors
- 👤 Robert E F Johanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:42
CPC Classifications
B; B27; B27B; B27B33/00; B27B33/14; B27B33/142; Y; Y10; Y10T; Y10T83/00; Y10T83/909; Y10T83/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1150218A
Cited
US2326854A
Cited
US2327233A
Cited
US2351738A
Cited
US2351112A
Cited
US2387064A
Cited
GB564152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |