US2905421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pan head
Assignee: Individual
•
Filing: 1954-03-29
•
Granted: 1959-09-22
•
Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 O'connor Chadwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:34
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/2007; F16M11/2014; F16M11/02; F16M11/04; F16M11/06; F16M11/10; F16M2200/00; F16M2200/02; F16M2200/021; F16M2200/022; F16M2200/04; F16M2200/041; F16M2200/044; F16M2200/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1764407A
Cited
US1898469A
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US2012628A
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GB428025A
Cited
US2164051A
Cited
US2514137A
Cited
US2459040A
Cited
US2536481A
Cited
US2582779A
Cited
US2607548A
Cited
US2743792A
Cited
US2717138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |