Patent US2274189A successfully refreshed from Google Patents.
US2274189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet roofing
Assignee: Individual
•
Filing: 1938-12-20
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Granted: 1942-02-24
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Expires: 1958-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John Congleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:10
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/10; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/933; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888; Y10T428/00; Y10T428/12; Y10T428/12347; Y10T428/12444; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799; Y10T428/12986; Y10T428/24; Y10T428/24802; Y10T428/2481; Y10T428/24826; Y10T428/24917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-02-23 | 1945-08-25 | 1946-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-23 | 1949-08-25 | 1950-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-23 | 1953-08-25 | 1954-02-24 | $7700.00 | Window Closed / Lapsed |