US2473944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selecting mechanism
Assignee: Hemphill Co
•
Filing: 1945-12-08
•
Granted: 1949-06-21
•
Expires: 1965-12-08
Abstract
No abstract record available.
Inventors
- 👤 Fregeolle Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:31
CPC Classifications
D; D04; D04B; D04B9/00; D04B9/26; D04B15/00; D04B15/32; D04B15/66; D04B15/665; D04B9/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1969853A
Cited
US2012607A
Cited
US2208308A
Cited
US2211785A
Cited
US2217022A
Cited
US2316822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |