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Patent US4009735B1 successfully refreshed from Google Patents.
US4009735B1
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US4009735B1 - - Google Patents
Assignee: PERFORMANCE CONTRACTING Inc CHARLOTTE NORTH CAROLINA A CORP OF KS
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Filing: 1974-10-02
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Granted: 1984-09-11
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Expires: 1994-10-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/021; F16L59/022; F16L59/026; Y; Y10; Y10S; Y10S138/00; Y10S138/02; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/24; Y10T428/24008; Y10T428/24017; Y10T428/24025
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) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |