US2530108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction device
Assignee: WHICHARD FLODQUIST AND Co
•
Filing: 1947-03-11
•
Granted: 1950-11-14
•
Expires: 1967-03-11
Abstract
No abstract record available.
Inventors
- 👤 Sr Thomas F Whichard
- 👤 Carl E Flodquist
- 👤 Oscar B Flodquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:55
CPC Classifications
B; B60; B60C; B60C27/00; B60C27/02; B60C27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US559958A
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US1438148A
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DE571761C
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US928433A
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US1226358A
Cited
US1285406A
Cited
US1297869A
Cited
US1329200A
Cited
US1609464A
Cited
US1619170A
Cited
FR798045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |