US3479076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock for gas and watertight closing of flaps,gates,doors and the like
Assignee: Rheinstahl Henschel AG
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Filing: 1968-06-10
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Granted: 1969-11-18
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Expires: 1988-06-10
Abstract
No abstract record available.
Inventors
- 👤 Hans-Georg Schallehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:08
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/001; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0886; Y10T292/0887; Y10T292/0891; Y10T292/20; Y10T292/225
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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |