US2671833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive apparatus
Assignee: Individual
•
Filing: 1950-06-13
•
Granted: 1954-03-09
•
Expires: 1970-06-13
Abstract
No abstract record available.
Inventors
- 👤 Bruce H Dunmyer
- 👤 Louvan E Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:35
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2061079A
Cited
GB166562A
Cited
US1780179A
Cited
FR674851A
Cited
US2181612A
Cited
US2450961A
Cited
US2582483A
Cited
US2648732A
Cited
US2645248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |