Patent US4121851A successfully refreshed from Google Patents.
Patent US3488899A successfully refreshed from Google Patents.
US3488899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof structure
Assignee: Ickes Braun Glasshouses Inc
•
Filing: 1968-01-31
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Granted: 1970-01-13
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Expires: 1988-01-31
Abstract
No abstract record available.
Inventors
- 👤 Hans F Schultz
- 👤 Carl Radtke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:51
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/14; E; E04; E04B; E04B7/00; E04B7/08; E04D; E04D3/00; E04D3/02; E04D3/06; E04D3/08; E04D3/24; E04D3/28; E04D2003/0812; E04D2003/0843; E04D2003/0856; E04D2003/0868; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |