US2907549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensioning device
Assignee: Individual
•
Filing: 1955-04-14
•
Granted: 1959-10-06
•
Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Dunaway H Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
D; D06; D06F; D06F53/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US296487A
Cited
US406579A
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US693881A
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US814139A
Cited
US893011A
Cited
US1124522A
Cited
US1253183A
Cited
US1444746A
Cited
US1542548A
Cited
US1648803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |