US3150618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door structure
Assignee: Individual
•
Filing: 1961-11-30
•
Granted: 1964-09-29
•
Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 Morton M Rosenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
E; E06; E06B; E06B5/00; E06B5/10; E06B5/12; Y; Y10; Y10S; Y10S454/00; Y10S454/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A BOMB SHELTER COMPRISING AN ENCLOSURE HAVING A DOORWAY, AN INNER AND AN OUTER DOOR IN SERIES IN SAID DOORWAY, A FLANGE ON SAID DOORWAY BETWEEN SAID INNER AND OUTER DOORS FOR RESILIENTLY SUPPORTING SAID OUTER DOOR, A CHAMBER IN A FLOOR BELOW SAID DOORWAY, A PASSAGEWAY PROVIDING COMMUNICATION BETWEEN SAID CHAMBER AND THE SPACE BETWEEN SAID DOORS, GUIDE MEANS ON SAID INNER DOOR FOR GUIDING REPLACED FILTERS INTO SAID PASSAGEWAY, AN APERTURE IN SAID INNER DOOR, A REPLACEABLE FILTER IN SAID APERTURE, MEANS PROVIDING COMMUNICATION BETWEEN THE ATMOSPHERE
Claim 2
Dependent Claim
89 words
A BOMB SHELTER COMPRISING AN ENCLOSURE HAVING A DOORWAY, AN INNER AND AN OUTER DOOR IN SERIES IN SAID DOORWAY, A FLANGE ON SAID DOORWAY BETWEEN SAID INNER AND OUTER DOORS FOR RESILIENTLY SUPPORTING SAID OUTER DOOR, A CHAMBER IN A FLOOR BELOW SAID DOORWAY, A PASSAGEWAY PROVIDING COMMUNICATION BETWEEN SAID CHAMBER AND THE SPACE BETWEEN SAID DOORS, GUIDE MEANS ON SAID INNER DOOR FOR GUIDING REPLACED FILTERS INTO SAID PASSAGEWAY, AN APERTURE IN SAID INNER DOOR, A REPLACEABLE FILTER IN SAID APERTURE, MEANS PROVIDING COMMUNICATION BETWEEN THE ATMOSPHERE
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) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |