Patent US2912979A successfully refreshed from Google Patents.
US2912979A
Expired / Lapsed
US
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Apparatus for administering and conserving gas
Assignee: Individual
•
Filing: 1956-02-17
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Granted: 1959-11-17
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Expires: 1976-02-17
Abstract
No abstract record available.
Inventors
- 👤 Lieber Samuel Loewenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:38
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0666; A61H; A61H31/00; A61M16/0672; A61M16/0677; A61H2201/00; A61H2201/50; A61H2201/5058; A61H2201/5064; A61M2202/00; A61M2202/02; A61M2202/0208; A61M2230/00; A61M2230/63
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309686A
Cited
US2225201A
Cited
DE729638C
Cited
US2288436A
Cited
US2830580A
Cited
FR1078669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |