US2861525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant roof vapor barrier and securement means
Assignee: Lexsuco Inc
•
Filing: 1956-01-30
•
Granted: 1958-11-25
•
Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Frank W Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:33
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/16; E04D13/1606; E04D13/1643; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1947134A
Cited
US1904080A
Cited
US2373317A
Cited
US2575686A
Cited
US2785099A
Cited
US2684953A
Cited
US2740505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |