US2548907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweep system
Assignee: Individual
•
Filing: 1944-04-19
•
Granted: 1951-04-17
•
Expires: 1964-04-19
Abstract
No abstract record available.
Inventors
- 👤 La Verne R Philpott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1933219A
Cited
GB400976A
Cited
US2084157A
Cited
US2085402A
Cited
US2074495A
Cited
US2153655A
Cited
US2285043A
Cited
US2188653A
Cited
GB474683A
Cited
US2244003A
Cited
US2222943A
Cited
US2405069A
Cited
US2363810A
Cited
US2400113A
Cited
US2419118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |