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US3533245A
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Gas lock for openings in pressurized chambers
Assignee: HAROLD L KOMBEREC
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Filing: 1968-11-14
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Granted: 1970-10-13
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Expires: 1988-11-14
Abstract
No abstract record available.
Inventors
- 👤 Harold L Komberec
- 👤 Dillon K Kilcup
- 👤 Alfred T Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:07
CPC Classifications
F; F24; F24F; F24F9/00; F25; F25D; F25D23/00; F25D23/02; F25D23/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |