Patent US3369958A successfully refreshed from Google Patents.
US3369958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing materials
Assignee: Individual
•
Filing: 1964-08-17
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Granted: 1968-02-20
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Expires: 1984-08-17
Abstract
No abstract record available.
Inventors
- 👤 Fleeman Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:49
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/17; E04D13/172; E04D3/00; E04D3/35; E04D3/351; E04D3/352; E04D5/00; E04D5/10; E04D5/12; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24752; Y10T428/31504; Y10T428/31815; Y10T428/31826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A SHEET COVERING COMPRISING A BASE CONSISTING OF A LAMINATION OF A THERMO-PLASTIC PLASTIC SHEET BETWEEN SHEETS OF PAPER BONDED TOGETHER AND EMBOSSED UNDER HEAT, AND THEN COATED ON ONE SIDE WITH BITUMEN, TAR OR RUBBER WHICH
Claim 2
Dependent Claim
37 words
A SHEET COVERING COMPRISING A BASE CONSISTING OF A LAMINATION OF A THERMO-PLASTIC PLASTIC SHEET BETWEEN SHEETS OF PAPER BONDED TOGETHER AND EMBOSSED UNDER HEAT, AND THEN COATED ON ONE SIDE WITH BITUMEN, TAR OR RUBBER WHICH
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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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |