US2882896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breathing apparatus
Assignee: Individual
•
Filing: 1955-07-18
•
Granted: 1959-04-21
•
Expires: 1975-07-18
Abstract
No abstract record available.
Inventors
- 👤 Henry W Seeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:12
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/04; A62B18/08; A62B18/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE659476C
Cited
FR472897A
Cited
US2108256A
Cited
CH209468A
Cited
US2353643A
Cited
US2377122A
Cited
US2465973A
Cited
FR996207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |