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Patent US2712281A successfully refreshed from Google Patents.
US2712281A
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Register or vents
Assignee: Fred Riebel & Co
•
Filing: 1953-07-28
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Granted: 1955-07-05
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Expires: 1973-07-28
Abstract
No abstract record available.
Inventors
- 👤 William K Riebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:10
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US657049A
Cited
US884023A
Cited
US1142792A
Cited
US1675854A
Cited
US1961948A
Cited
US2225349A
Cited
US2231011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-04 | 1959-01-03 | 1959-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-04 | 1963-01-03 | 1963-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-04 | 1967-01-03 | 1967-07-05 | $7700.00 | Window Closed / Lapsed |