US3137100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing product
Assignee: Individual
•
Filing: 1953-04-29
•
Granted: 1964-06-16
•
Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Norman P Harshberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:45
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/08; E04D1/00; E04D1/12; E04D1/16; Y; Y10; Y10T; Y10T428/00; Y10T428/18; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24752; Y10T428/249921; Y10T428/249924; Y10T428/249932; Y10T428/27; Y10T442/00; Y10T442/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A DRY PROTECTIVE COVERING IN SHEET FORM APPLIED WET AND UNSET COMPRISING FELTED FIBERS MIXED WITH HY-
Claim 2
Dependent Claim
17 words
A DRY PROTECTIVE COVERING IN SHEET FORM APPLIED WET AND UNSET COMPRISING FELTED FIBERS MIXED WITH HY-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |