US2895640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas dispensing apparatus
Assignee: MSA Safety Inc
•
Filing: 1955-02-17
•
Granted: 1959-07-21
•
Expires: 1975-02-17
Abstract
No abstract record available.
Inventors
- 👤 Earl M Becker
- 👤 John J Bridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:54
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; A; A62; A62B; A62B9/00; A62B9/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US119455A
Cited
US956283A
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US1564644A
Cited
US1659263A
Cited
US1750978A
Cited
US2002883A
Cited
US2695731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |