Patent US3545147A successfully refreshed from Google Patents.
US3545147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal roofing panel
Assignee: Winbro Inc
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Filing: 1968-07-25
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Granted: 1970-12-08
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Expires: 1988-07-25
Abstract
No abstract record available.
Inventors
- 👤 Ray Eastham
- 👤 Irvin E Goertzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:28
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/36; E04D1/365; B; B60; B60P; B60P3/00; B60P3/32; B62; B62D; B62D25/00; B62D25/06; E04D3/00; E04D3/36; E04D3/366; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US749943A
Cited
US949838A
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US2406559A
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US2986193A
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US3148481A
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US3213583A
Cited
US3428170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |