US3536456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen supply system
Assignee: Automatic Sprinkler Corp
•
Filing: 1967-04-03
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Granted: 1970-10-27
•
Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Robert M Bovard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:43
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0296; A; A62; A62B; A62B21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2121034A
Cited
US2558756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |